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  controlled in a
     It was shown that the acidity of the solution was most critical for determination of lead, which should be controlled in a narrow range of cHNO3 0. 20 - 0. 22 mol·L-1. For the determination of cadmium, broader range of acidity between cHCl 0. 20-0. 31 mol·L-1 were tolerable.
     试验结果表明,测定铅的溶液酸最严格,应控制在cHNO30.20~0.22 mol·L-1之间,与此相比,测定镉的酸度范围较宽,可允许在cHCl 0.20~0.31 mol·L-1范围内。
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     In this paper some effective control methods are introduced and the results show that the melt index of polypropylene in batch type liquid phase bulk polypropylene can be controlled in a narrow range of n±1.5g/10min.
     文章表明 ,只要控制得当 ,间歇式小本聚丙烯装置产品的熔体指数可以控制在n± 1.5g/ 10min的较稳定范围。
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     Compare with the nonlinear regression algorithms, the results of the genetic algorithms can be controlled in a more logical range.
     与非线性回归算法相比,遗传算法所给出的结果可以被控制在一个合乎逻辑的取值范围内,即算法的有效性更强。
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     The study showed that the optimum process conditions were 40~50 ℃, 50% moisture content 30 mm particle size and the C/N ratio of 30∶1. The experiment results showed these factors should be strictly controlled in a proper range to ensure composting reactions.
     实验结果表明最佳堆肥实验条件为:温度40~50℃,含水率50%,粒径30mm,C/N质量比30∶1.实验结果显示为了保证仓式好氧堆肥反应的顺利进行,上述几个因素应当被严格地控制在适当范围内.
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     Presents some investigation results of nanocrystalline silicon thin films deposited on p-type silicon substrates by RF sputtering process at low temperature or 100℃ in the working gas (H_2+Ar) of which the H_2 partial pressure was controlled in a range from 31% to 73% with the time for film deposition changed correspondingly.
     用射频溅射法在P型硅衬底上生长了纳米硅薄膜,衬底温度控制在100℃左右,工作气体选用H2+Ar,氢气的分压控制在31%到73%,同时改变薄膜的沉积时间。
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  controlled in the range
     when the sulphide ions content in sample was 10-6~10-2 mol/L, the pH value of the sample should be controlled in the range of 2.5~6;
     试料中硫离子浓度为10-6~10-2mol/L时,pH值应控制在2.5~6.0之间;
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     Based on the characteristic analysis of KCl-LiCl solid phase non-intersoluble sys-tem,a homogeneously doped in high effective concentration KCl:Li F_A (Ⅱ) type colorcenter laser was successfully developed in our laboratory. The effective concentration of Li~+in the crystal was controlled in the range of 1×10~(-2)~1.5×10~(-2)wt-%.
     本文分析了 KCl-LiCl 固相不互溶体系的特点,报道了我们研制成功的高浓、均匀、有效掺杂的 KCl∶Li F_A(Ⅱ)型色心激光晶体材料,该晶体中 Li~+的“有效”掺入量控制在1×10~(-2)~1.5×10~(-2)wt-%范围内。
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     The results showed that the final [Si] content of 0.144 %~0.090 % can be reached if the oxygen potential is controlled in the range 1.64×10 -4 % to 3.26×10 -4 %;
     结果表明 ,在 16 2 3K温度和初始硅含量为 0 .30 %的条件下 ,将铁水氧势控制在 (1.6 4~ 3.2 6 )× 10 - 4 %范围 ,可获得终点硅含量为 0 .144 %~ 0 .0 90 %的脱硅效果 ;
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     Therefore it is suggested that the length of root crown should be controlled in the range of 2.5 to 3.5cm in order to meet the need of grafting.
     因此根颈的长度应控制在能满足嫁接要求范围之内(2.5-3.5cm)。
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     Results The blood glucose levels of 41 cases were controlled in the range of 6.1 to 11.1mmol/L,and the urine glucose was kept(±)to(+).
     结果41例患者围手术期血糖控制在6.1~11.1 mmol/L,尿糖:(±)~(+)。
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  “控制在”译为未确定词的双语例句
     Reducing Harmonic Distortions in Power System with Intelligent Control
     智能控制在电力系统谐波抑制中的应用
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     The Application Study of Intelligent Control on Main-steam Temperature Control at Power Plant
     智能控制在电厂主蒸汽温度控制系统中的应用研究
短句来源
     The Characteristics of Quality Control Applied in the Field of Post and Communication and the X_(SE)-R_S Control Chart
     质量控制在邮电部门中应用的特点与X_(SE)-R_s控制图
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     Application of State Feedback Control to Papermaking Process
     状态反馈控制在造纸过程中的应用
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     APPLICATION OF ADAPTIVE CONTROL TO AIRCRAFT SYSTEMS
     自适应控制在飞机控制中的应用
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  controlled in a
In order to investigate the role of these factors, the "cold gas-hot substrate" chemical vapor deposition (CVD) method has been applied, because it permits them to be closely controlled in a wide range.
      
The temperature of the sample under study is controlled in a wide dynamic range (from 70 to 1500 K) in steps of 0.06 K.
      
The frequency of the valve actuation is controlled in a range of 5-50 Hz; the gas pulse duration is regulated within the limits of 0.2-4 ms (FWHM).
      
It is found that the diffraction characteristics can be controlled in a wide range of incident polarization.
      
The feasibility of the frequency spectrum of Vavilov-Cherenkov radiation being controlled in a wakefield dielectric-filled accelerating structure via an outer ferroelectric layer is studied.
      
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  controlled in the range
The temperature can be controlled in the range of -10-40°C and relative humidity in the range of 5-80% RH.
      
The flow rate can be precisely controlled in the range 200?nL to 2.5?μL?min-1 by varying the voltage from 1 to 6?kV.
      
The acetalization reaction was carried out with acetaldehyde in water The degree of acetalization was controlled in the range 10-25% by the initial aldehyde concentration.
      
The resulting polymers were controlled in the range of narrow molecular weight distributions, with $\bar{M}_{w}/\bar{M}_{n}$ lower than 1.3.
      
The average diameter of the Ge nanoclusters can be controlled in the range of 3-6?nm by variation of the annealing parameters.
      
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A method for preparing the high acid-consuming-capacity dried aluminium hydroxide powder by the use of alum and soda or other alkali substance as raw material is described. 1) The best results were obtained by using soda as raw material for preparing the alkali solution. 2) The alum solution was added to the alkali solution until pH 5.5-6.5 was reached. 3) The sulfate was removed almost completely by washing with potassium bicarbonate solution(0.4%) before drying. 4) The aluminium hydroxide gel can be dried...

A method for preparing the high acid-consuming-capacity dried aluminium hydroxide powder by the use of alum and soda or other alkali substance as raw material is described. 1) The best results were obtained by using soda as raw material for preparing the alkali solution. 2) The alum solution was added to the alkali solution until pH 5.5-6.5 was reached. 3) The sulfate was removed almost completely by washing with potassium bicarbonate solution(0.4%) before drying. 4) The aluminium hydroxide gel can be dried completely under 100-105℃(ca. 6 hrs.) without influencing the antacid activity. 5) The highest acid-consuming-capacity of the dried powder of aluminium hydroxide gel(free from any free alkali) was determined to be 315.9 ml, i.e. one gram dried sample will neutralize 315.9ml 0.1N HCl.

1.以明礬液倒入碳酸钠溶液中,混合液之酸度须控制为pH6(±0.5)。 2.所得膠体,先用普通水洗滌,继用0.4%碳酸氢钾溶液在抽氣漏斗上洗滌。除去硫酸鹽之手續须一次完成之,烘乾以後即不能重行处理,否则,制酸力急速下降。 3.乾燥可控制在90—110℃(约6—10小时),大量烘乾时应注意湿空氣之排出。 4.产品的制酸力一般为250—280毫/克,最高达315.9毫升/克;硫酸鹽之含量远低於药典规定;游离鹼亦远低於苏联药典之规定。

~~

为了说明高矽质矽砖在烧成中发生的物理化学变化对制品性质及破裂的影响,以五台(A)、都拉哈拉(B)、石门(C)、江密峰(D)产四种矽石为原料依高矽质矽砖的制造条件制成度样,分别按固定的升温速度烧至1000°,1250°,1250°,1400°,1430℃和在1430℃保温15小时6种温度条件下烧成,根据试样的窑业物理性质与相组成变化讨论了烧成期间影响制品性质和破裂的原因。结果指出: 1.高矽质矽砖的窑业物理性质不论原料的种类如何,均在1000℃以上的温度发生显著的变化。影响这些变化的主要原因是玻璃质的生成和石英的变态转变。2.高矽质矽砖中的石英变态转变过程,依原料种类有很大区别,石英→方石英的转变速度呈:C>A>B>D的顺序;方石英→鳞石英的转变速度呈B>A>C>D的顺序。3.高矽质矽砖在烧成中产生破裂的原因,是基质完全转变之后,石英→方石英转变在大颗粒石英进行时产生的应力状态引起的。4.为了避免烧成破裂,对于A,C两种原料可不加或少加添加物,烧成上火温度应控制在1350℃;B可不加添加物或只加MgO;D需加入适量的添加物,烧成止火温度要略高于1350℃。

Three problems concerning the methods of determination of total phosphorus in soil were discussed in this paper. 1. Volumetric method: The comparison of several techniques of volumetric determination of total phosphorus in soil had been made. The method of precipitation in strong H_2SO_4—HNO_3 solution gave the better results. Owing to the fact that the errors vary with the phosphorus content in sample solution, it is recommended to calculate the results according to the "titrition value" obtained from NaOH...

Three problems concerning the methods of determination of total phosphorus in soil were discussed in this paper. 1. Volumetric method: The comparison of several techniques of volumetric determination of total phosphorus in soil had been made. The method of precipitation in strong H_2SO_4—HNO_3 solution gave the better results. Owing to the fact that the errors vary with the phosphorus content in sample solution, it is recommended to calculate the results according to the "titrition value" obtained from NaOH standardized with standard KH_2PO_4 solution rather than to calculate the results stoichiometrically. 2. Colorimetric method: The results obtained from comparison of five colorimetric methods showed that the Mo-blue method with ascorbic acid as a reductant was most satisfactory in the determination of total phosphorus in soil. The advantages of this method are its considerable sensitivity, stability and practical convenience. Moreover, it is not necessary to remove ferric ion from the analytical solution when this method is used. 3. Method of decomposition of soil: Through the comparison of the six methods of decomposition of soils for the determination of total phosphorus, the H_2SO_4-HClO_4 method is considered to be most suitable for routine analysis; the Na_2CO_3 method and the HC1O_4 method are more preferable for red soils. On the basis of this systematically compatative study, some recommendations about the selection of decomposition and analysis methods of total phosphorus were made and the procedures of volumetric and colorimetric methods were proposed in this paper.

本文对土壤全磷分析工作中最为主要的三个问题进行了比较研究,结果如下: 1.磷的容量分析法:认为容量分析法如掌握得当仍然适合于土壤全磷分析。在三种容量分析方法中以在H_2SO_4—HNO_3强酸性溶液中沉淀并于滴定前加甲醛的方法较易得到满意的结果。土壤分解液中P_2O_5的含量应控制在1毫克左右,每毫升N_2OH溶液所相当的P_2O_5毫克数需用含P_2O_51毫克的KH_2PO_4标准溶液来标定。 2.磷的比色分析法:对五种磷的比色刀八析方法进行了全面比较。在这些方法中以抗坏血酸还原的钼蓝比色法最适用于土壤全磷分析。这种方法有足够的灵敏度,其颜色的时间稳定性及酸度稳定性均相当高,易于掌握。更重要的是不必除去酸性分解液中的三价铁离子,很方便。 3.土壤分解方法:对六种常用的土壤分解方法进行了比较试验。Na_2CO_3法虽然分解最完全,但需用铂坩埚,在各种强酸分解法中纯HClO_4分解法的效率最高,但价格最贵;Mg(NO_3)_2王水法及H_2SO_4法的分解率均偏低;H_2SO_4—HNO_3法及H_2SO_4—HClO_4的分解率平均可达97%以上,尤以H_2SO_4—HClO_4法手续简便,分解...

本文对土壤全磷分析工作中最为主要的三个问题进行了比较研究,结果如下: 1.磷的容量分析法:认为容量分析法如掌握得当仍然适合于土壤全磷分析。在三种容量分析方法中以在H_2SO_4—HNO_3强酸性溶液中沉淀并于滴定前加甲醛的方法较易得到满意的结果。土壤分解液中P_2O_5的含量应控制在1毫克左右,每毫升N_2OH溶液所相当的P_2O_5毫克数需用含P_2O_51毫克的KH_2PO_4标准溶液来标定。 2.磷的比色分析法:对五种磷的比色刀八析方法进行了全面比较。在这些方法中以抗坏血酸还原的钼蓝比色法最适用于土壤全磷分析。这种方法有足够的灵敏度,其颜色的时间稳定性及酸度稳定性均相当高,易于掌握。更重要的是不必除去酸性分解液中的三价铁离子,很方便。 3.土壤分解方法:对六种常用的土壤分解方法进行了比较试验。Na_2CO_3法虽然分解最完全,但需用铂坩埚,在各种强酸分解法中纯HClO_4分解法的效率最高,但价格最贵;Mg(NO_3)_2王水法及H_2SO_4法的分解率均偏低;H_2SO_4—HNO_3法及H_2SO_4—HClO_4的分解率平均可达97%以上,尤以H_2SO_4—HClO_4法手续简便,分解液色度甚浅,对容量分析及比色分析均相宜。不同类型土壤中的磷具有不同的可分解性,钙质土最易分解,白浆土、水稻土依次较难,红壤最难分解。在比较试验的基础上本文提出了因土壤类型及实验精度要求的不同而选用分解方法及分析方法的具体意见。

 
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