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sufficient     
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  足够的
     A system of DMS +H_2O_2 and a system of DMS+NO were also studied by using the same method. It was found that in the presence of sufficient H_2O_2,DMS was photolyzed to form CH_2O and CH_3SO_3H.
     用低压汞灯照射DMS+H2O2体系,富里叶红外光谱检测其产物,在有足够的H2O2情况下,生成了CH2O和CH3SO3。
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     The heat capacity of unsaturated liquid when Tr<0.8 and Pr<1, can also be estimated by this method with sufficient accuracy.
     对于液体,在Tr<0.8与Pr<1时,用本方法推算其非饱和状态下的热容,亦有足够的精度。
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     The EAF tap contents(%) (C 0.7~0.90; Mn,Si 0.20~0.30; Al 0.010~0.020)and tap temperature (1660~1680℃) are designed to supply sufficient thermal energy for VOD refining welding rod steel.
     Mn、Si0.20~0.30; Al0.010~0.020,出钢温度为1660~1680℃,为VOD精炼超低碳焊条钢提供了足够的热能。
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     The error between calculated value by this proposed equation and experimental data is less than ±0.5%, with a standard deviation of 9.40852×10~(-4), having sufficient accuracy for engineering calculation.
     经检验,该方程的计算值与实验数据之间的误差在±0.5%以内,标准偏差为9.40852×10-4,具有足够的工程计算精度.
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     The operation practice that vessel steel is produced by 100t FSF-LF-CCM process at Anyang steel shows: Adding 20%~30%melten iron in FSF charge,through pulverized coal injection and strengthening supply oxygen to form sufficient foaming slag and fierce carbon-oxygen reaction are helpful to remove some nitrogen in melten steel.
     安阳钢铁公司采用100 tFSF-LF-CCM工艺生产容器钢,操作实践表明,在FSF炉料中配加20%~30%铁水,并通过喷吹碳粉和富氧操作,形成足够的泡沫渣和强烈的碳氧反应,有利于去除钢液中的部分氮。
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  充分的
     The necessary conditions for the existence of a (K3+e ,λ)- GDD of group type gtu1 are also sufficient except for (g,t,u, λ)≠(1,3,0,λ)or(1,2,1,λ) where λ≡0 (mod 4).
     主要证明组型为gtu1的(K3+e,λ)-GDD存在的必要条件也是充分的,除去(g,t,u,λ)≠(1,3,0,λ)或(1,2,1,λ),其中λ≡0 (mod 4)。
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     In this paper, it is proved that the necessary conditions for the existence of a GS(2,3, n, 10), namely, n ≡ 0,1 (mod 3) and n ≥ 12, are also sufficient.
     本文证明了GS(2,3,n,10)存在的必要条件n≡0,1(mod3),n≥12也是充分的
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     In this paper,we prove that the necessary conditions are also sufficient,possibly except h = 8 and n∈{14,18} or h ≡ 2,10(mod12) and n∈{14,18,23}.
     文章证明了除h=8且n∈{14,18}和h≡2,10(mod12)且n∈{14,18,23}为可能以外,这个必要条件也是充分的.
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     The necessary conditions for the existence of simple and indecomposable designs B(5,2;v) are v 1 or 5(mod10),v≥11 and v15. In this paper it is proved that the conditions are sufficient, except possibly . v-∈ E={35,75,95,115,135,215}.
     单纯不可约设计B(5,2;υ)存在的必要条件是:υ1,5(mod10),υ≥11,υ 15.本文证明了当υ E={35,75,95,115,135,215}时,该条件也是充分的
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     It is proved that the necessary conditions for the existence of a {C3, C2k} - mandatory decomposition are also sufficient whenever r≥5k + 2 in this paper.
     证明了完全r部图Kr(t)的{C3,C2K}-强制分解的渐近存在性,即对于任意给定的正整数k≥2,存在常数r0=r0(k),使得当r≥r0时,Kr(t)的{C3,C2K}-强制分解存在的必要条件也是充分的.
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  充足
     To fruit body, the temperature 25~30℃, about 90% air humidity, pH4.0~6.0, sufficient oxygen supply and with scattered-light.
     子实体的适宜生长条件为:温度25~30℃,空气湿度90%左右,pH4.0~6.0,氧气充足,需要光照。
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     The results show that the optimum condition for solid fermentation by Ganoderma lucidum with herbal residues were: temperature 26~28℃, water content in culture medium 55%~60%, pH5.0~6.0, sufficient oxygen supply and with no light.
     结果表明,灵芝菌固体发酵最适温度为26~28℃,培养基含水量55%~60%,pH5.0~6.0,氧气充足,无需光照;
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     Ca,S and Zn contents were sufficient;
     Ca、S和Zn 营养充足
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     To further provide sufficient test data for formulating the norm fracture of hydro-engineering concrete in China,as suggested by the committee on norm concrete fracture test,a series of fracture tests were performed on a total of 140 specimens via three-point bending and wedge-splitting,with the maximum dimensions being S×D×B=2200 mm×550 mm×240 mm and 2H×D×B=1200 mm×1200 mm×250 mm respectively.
     为配合水工混凝土断裂试验规程在我国的制定,提供更充足的基础数据,受规程编制组委托,进行了最大尺寸为S×D×B=2200 mm×550 mm×240 mm的三点弯曲梁试件和最大尺寸为2H×D×B=1200 mm×1200 mm×250mm的楔入劈拉试件共140个试件的断裂试验。
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     Within the experimental range, the cell concentration and specific growth rate increase with increasing concentrations of NaNO_3 and NaH_2PO_4. The lower concention of NaNO_3 and NaH_2PO_4 can hasten the accumulation of fatty acids in microalgae cells, while it can get high content of DHA when NaNO_3 and NaH_2PO_4 are sufficient.
     在实验设定的范围内,随着NaNO_3和NaH_2PO_4浓度的增加,细胞密度和比生长速率随之增加,氮磷缺乏可以促进脂肪酸在微藻细胞内的积累,而氮磷充足时可以在总脂肪酸中获得较高的DHA的百分含量。
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  足够
     By replacing B2O3 with Al2O3, the Al3+ ions introduced in glasses take the four-coordination, and AlO4 tetrahedra replace BO4 tetrahedra under the condition of existing sufficient Li2O.
     以Al_2O_3置换B_2O_3,在有足够Li_2O的情况下,引入的Al~(3+)以四配位形式存在,形成的AlO_4四面体取代玻璃中BO_4的四面体;
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     When the potential scan-range extends to sufficient negative, 6MP exhibits multiwave due to the reduction of 6MP and its reduction products adsorbed further.
     当电位扫描范围拓展至足够负时 ,6MP的伏安图上出现多个波 ,这是由于 6MP在较负电位处发生还原 ,其还原产物吸附在电极表面并进一步发生氧化还原所致 .
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     These results indicate that although the number of T cell (CD3+ cell) and Th cell (CD; cell) is adequate and the ratio CD4/CD3 is higher in newborn, the expression of IL-2R on activated lymphocytes is not sufficient.
     说明尽管新生儿具有足够数量的T细胞(CD_3阳性细胞)和辅助性T细胞(CD_4阳性细胞),且CD_4/CD_3比值还高于成人,但其活化淋巴细胞上IL-2R的表达不足,故影响IL-2作用的发挥;
短句来源
     Results Sufficient kidney tissues were obtained in 68 patients, Total success rate and success rate within 3 puncture were 82%and 53%respectively. There was no difference between the adults and children.
     结果68例获取足够肾组织,总成功率及3针以内成功率分别为82%、53%,成人与儿童间无差异(P>0.05)。
短句来源
     The aeration rates of 0.45 vvm(volume of air/vol of sludge in reactor/min) and 0.3 vvm were sufficient to lower pH to 2.5 in 10 days,while 0.2 vvm lowered pH to 2.7 in 12days; 0.1 vvm resulted in a pH of 3.5 at the end of the test period.
     曝气强度在0.45 L/min和0.3 L/min差别较小,5 d内能迅速降低pH,0.2 L/min的酸化速率较慢,足够长的时间(12 d)也能将pH降至2.5左右,0.1 L/min的曝气强度的酸化速率最慢,不能达到预期的酸化效果。
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  sufficient
We give a simple necessary and sufficient condition for a Schubert
      
A necessary and sufficient geometric condition on the growth of the boundary of approximate tiles is reduced to a problem in Fourier analysis that is shown to have an elegant simple solution in dimension one.
      
In the spirit of work of Kerman and Sawyer, a condition is given that is necessary and sufficient for the Fourier transform norm inequality
      
A sufficient condition for the sequence of sampling functions to constitute a frame is derived.
      
Furthermore, we generalize the sufficient and necessary conditions of orthogonality given by Lawton and Cohen to the case of several dimensions and arbitrary dilation matrix A.
      
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In this paper some cases of optimum control are studied when the conditions at the ends of trajectories are constrainted. The boundary conditions of the system of the differential equations (19), (22), etc. are determined; the formulae of functional variation (20) are derived; and the sufficient conditions of optimality and necessary conditions in some cases are proved.

当軌线末端受有条件限制时,将使最优控制系統有关的微分方程的边界条件变得复杂。本文考虑了各种受限情形,提出了确定边界条件的方法,得到泛函改变量公式,討論了控制最优性的充分条件以及在某些情形下的必要条件。

In view of the necessity of a rapid and accurate process for the deter-mination of fluorine applicable in the analysis of sodium fluoride and otherfluorine compounds,the author has established a new volumetric processconsisting in the titration in aqueous-alcoholic medium with ferric nitrate asstandard solution and sodium salicylate as indicator.All of the methods,published by Guyot,Greeff,Fairchild andVisintin proposed for the determination of fluorine using ferric solutionas standard,are based on the reaction:6NaF+FeCl_3→Na_3FeF_6+3NaCl....

In view of the necessity of a rapid and accurate process for the deter-mination of fluorine applicable in the analysis of sodium fluoride and otherfluorine compounds,the author has established a new volumetric processconsisting in the titration in aqueous-alcoholic medium with ferric nitrate asstandard solution and sodium salicylate as indicator.All of the methods,published by Guyot,Greeff,Fairchild andVisintin proposed for the determination of fluorine using ferric solutionas standard,are based on the reaction:6NaF+FeCl_3→Na_3FeF_6+3NaCl. But the sodium ferric fluoride thus formed is fairly soluble in water and makesthe end-point unclear,therefore the titration can not be performed accurately.This seems to be due to the fact that the following two reactions advancesimultaneously,and accordingly the formation of sodium ferric fluoride is in-complete in aque(?)us medium:3NaF+Fe(NO_3)_3→FeF_3+3N_aNO_33NaF+FeF_3→Na_3FeF_6Nevertheless,these reactions,according to the author's experiments;proceedalmost quantitatively in meda.containing at least 50% by volume of alcohol.This paper reports the xperimental results obtained in the fundamentalstudies on the various factors influencing the accuracy of the volumetry,namely,the sensitivity and the necessary amount of sodium salicylate used asindicator,the pH value,the alcoholic concentration of the titration medium,the concentration of the fluoride taken for the determination and the timewhen alcohol should be added in the course of titration.Furthermore,a rapidvolumetric process with high accuracy is proposed together with its applicationsin ordinary analyses of sodium fluoride and other fluorine compounds.The proposed method is characteristic in using sodium salicylate asindicator,which shows sharp violet color with minute amount of ferric ion inmedium of pH 3 controlled with buffer solution,then titrating with standardferric nitrate,and adding proper amount of alcohol(the alcoholic concentra-tion at the end-point should be above 50%)during the titration,when themedium becomes orange yellow in color.The method may be summarized as follows:Take 5 ml of neutral sodiumfluoride solution of about 0.3 N in a small Erlenmeyer flask,add 2.5 mlof Walpole's buffer solution of pH 3(formed by dissolving 34.0 g ofcrystalline sodium acetate and 20 ml of 38% HCl in water,and making upto 250 ml)and 1 ml of 0.1 M sodium salicylate dissolved in 50% alcohol.After sufficient stirring,titrate with standard 0.3 N(0.05 M)ferric nitratesolution,using micro-burette until the medium becomes orange yellow,thisstep being reached after addition of about 4 ml of titrant.Then decolorizethe solution by adding 12.5 ml of absolute alcohol(or 13 ml of 95% alcohol),previously purified by redistillation with lime;stirring is necessary during theaddition.Further continue the titration until the light pink color formeddoes not fade after stirring for 30 seconds when observed over a white surface. In the analyses of sodium fluoride and other fluorine compounds con-taining interfering substances,such as divalent and polyvalent metallic ions,phosphate,silicate,borate,carbonate,sulfide ions and reductants acting on ferricion,it is necessary to separate fluorine from these interfering substances bythe distillation with sulfuric acid according to the method of Willard andWinter(20).Then the distillate is neutralized with dilute sodium hydroxideand adjusted to the proper pH with hydrochloric acid using p-nitrophenol asindicator.The solution is ready for titration as described.But in the caseof absence of these interfering substances except carbonate,for example,inthe determination of the concentration of sodium fluorde solution obtained bythe extraction of the crude product,produced industrially by fusing fluorsparwith sodium carbonate and silica,the above separation of fluorine by dis-tillation is dispensable.The anaIytical results obtained by the proposed method are in goodagreement with those obtained by the lead chlorofluoride process(8),whichis recognized as official method for the determination of fluorine in agriculturalproducts.

本文介绍一容量分析氟的新方法和在工业制品上的应用,并分析了一种工业制备的氟化钠液,所得的结果和氟氯化铅法所得的极为一致。对于影响该分析法准确度的各种因素:指示剂的灵敏度和滴定时适宜的用量、溶液的 pH 值、应加的乙醇量、操作中加乙醇的次序、以及氟离子的适宜浓度,均加以研究并找出适宜的情况。本法用硝酸铁为标准液,水杨酸钠作指示剂,在 pH=3左右作滴定;当溶液呈橙黄色时,加入适量的乙醇,使其浓度在终点时仍不低于50%。如有干扰物质如二价及多价金属离子、磷酸根、矽酸根、硼酸根、碳酸根、硫化物和还原物质可能与三价铁起作用者,均应分离之。

Ten adults with equal number of males and females, aged 17-32 years, were selected as experimental subjects. Cooked vegetable containing 3-4.5 mg of carotene was given to each subject daily for three consecutive days. The vegetables tested were spinach, colza, carrot, sweet potato, dehydrated colza and dehydrated carrot. An oil concentrate with a carotene content of 0.5 mg per ml prepared from the leaves of alfalfa in this laboratory was also tested.The average percentages of absorption of the ingested carotene...

Ten adults with equal number of males and females, aged 17-32 years, were selected as experimental subjects. Cooked vegetable containing 3-4.5 mg of carotene was given to each subject daily for three consecutive days. The vegetables tested were spinach, colza, carrot, sweet potato, dehydrated colza and dehydrated carrot. An oil concentrate with a carotene content of 0.5 mg per ml prepared from the leaves of alfalfa in this laboratory was also tested.The average percentages of absorption of the ingested carotene from different sources were as follows: spinach 25.5%, colza 36.2%, carrot 27.4%, sweet potato 19.7% dehydrated colza 29.0% dehydrated carrot 36.7% and carotene concentrateIt had been shown that there was no significant effect on the absorption of carotene from vegetable by increasing oil supply in the diet. A daily intake of 16 g of vegetable oil for each subject was found to be sufficient for the absorption of carotene in the cooked vegetables. The increase of the oil consumption from 16 to 48 g daily did not improve the absorption of carotene.There was great variation in the result with different subjects and also with in different test peroids for the same subject on the same diet. Part of the variation may be attributed to the difference in carotene content among the servings resulting from uneven distribution of carotene in vegetables.

用菠菜、油菜、胡萝卜、甜薯、脱水油菜和脱水胡萝卜进行胡萝卜素吸收试验,人与人之间吸收率的差异性很大。各种蔬菜的平均吸收率如次:菠菜25.5%,油菜36.2%, 胡萝卜27.4%,甜薯19.7%,脱水油菜29.0%,脱水胡萝卜36.7%。 由苜蓿制备的胡萝卜素油剂中胡萝卜素的吸收率平均为43.3%,较所试蔬菜中胡萝卜素的吸收率为高。 每日于膳食中供给食油16克已足够胡萝卜素吸收之需要,增加用油量至48克并不能促进蔬菜中胡萝卜素的吸收。

 
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