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减法     
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  subtraction
     In the cotton harvest time, sampling to analyze, according to the subtraction counts nitrogen fertilizer utilization is 48.58%~53.15% in the cotton with drip irrigation, utilization of phosphorus is 18.73%~24.84%.
     收获期棉株取样化验分析,根据差减法求得滴灌棉花氮肥利用率为48.58%~53.15%,磷肥利用率为18.73%~24.84%。
短句来源
     The third part is to suppress the background clutter and enhance the target by the methods of frame subtraction and background prediction on the basis of the analysis of the spatial and temporal property of the target and the background, to eliminate the remanent Gaussian noises using higher-order cumulant, and to accomplish the detection and recognition of pulse spectral signal.
     完成光谱信号的采集之后,在对目标信号和背景杂波的时间和空间特性进行分析的基础上,采用帧减法和背景预测法对背景杂波进行抑制、增强目标,然后利用高阶累积量进一步消除杂波抑制后的剩余噪声,将目标信号从背景杂波及系统噪声中提取出来,完成对脉冲光谱信号的检测与识别。
短句来源
     METHODS To perform by combined usage of K-ratio spectrophotomerty and absorbance subtraction technique technique at 284nm and 320nm without separating.
     方法应用系数倍率法与吸收度减法技术联用,不经分离在284nm、320nm波长处直接测定。
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     Methods The RCAⅠidentifying Terminal Galβ1-4 GlcNAc glycoprotein was acquired by RCAⅠ(Ricinus communis agglutininⅠ) affinity chromatography method from nor- mal person serum and was marked by the horseradish peroxidase. 133 tumor patients,64 benign disease patients and 240 normal person serums were detected by the subtraction of agglutinin.
     方法应用RCAⅠ(蓖麻凝集素Ⅰ)亲和层析法从正常人血清中获得RCAⅠ相关末端Galβ1-4GlcNAc糖蛋白,用辣根过氧化物酶标记,采用凝集素差减法,对133例肿瘤患者,64例良性疾病患者和240例正常人血清进行检测。
短句来源
     Boolean algebra and subtraction algebra
     Boolean代数与减法代数
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  subtract
     This paper proposed to simulate the 50 Hz power interference with sine function and subtract it from the original records.
     为此,提出采用正弦函数来模拟50Hz工业干扰,并采用减法运算从数据中减去它,达到消除50Hz工业干扰又使有效波损失减小到最小的目的。
短句来源
     The design of a fully differential CMOS sampling holding circuit and inter stage subtract gain circuit used in 10 bit 30 M sample/s pipelined ADC is presented in this paper.
     介绍一种 1 0位分辨率、3 0 MHz采样频率流水线操作 A/D变换器中的 CMOS全差分采样 -保持(S/H)电路和级间减法 -增益 (SUB/GAIN)电路的设计。
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     The results were demonstrated as follows: 1. It had no statistic significance in both groups postoperatively when the surgically induced astigmatism were analysesed by direct subtract and Jaff e method (P>0. 05).
     1.用直接相减法以及Jaffe矢量分析法分析白内障手术后各个时期巩膜电凝组与非电凝组散光,两组间没有统计学上显著的差别(P>0.05)。
短句来源
     (2) that the spent times of subtract and division mental arithmetic of college student are significant briefer than that the pupils, but there are no significant differences in the multiplication.
     (2)在减法和除法的口算时间上,大学生明显短于小学六年级学生,但在乘法口算上无显著差异。
短句来源
     Method: We use sealed cotton swab to sample in cervix. We get the weight of secretion by differential subtract method then to detect the Uu by FQ-PCR.
     方法 对门诊的阴道炎患者 ,采用特制密封棉拭子宫颈管内取样 ,然后采用重量差减法 ,求出分泌物的重量 ,采用荧光定量PCR测定解脲脲原体。
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  subtracting
     Analysis of CMRR of Two Basic Subtracting Circuits
     两种基本减法运算电路共模抑制比(CMRR)的分析
短句来源
     The effects of non-NaFeEDTA unfortified iron in soy sauce samples and background color were eliminated by subtracting the resultant value obtained under neutral condition from the value obtained under acid condition. The rate of recovery was 98.5%~107.9%,with relative standard deviation(RSD)1.4%~5.1%.
     试样中的非强化的铁及颜色背景的干扰采用差减法校正扣除,试样加标回收率为98.5%~107.9%,相对标准偏差(RSD)为1.4%~5.1%。
短句来源
     Experiments showed that the gain-bandwidth of the subtracting operational amplifier is the key of hardware method.
     实验表明减法运算放大器增益带宽是硬件方法的关键。
短句来源
     On "Subtracting" Design
     论“减法”设计
短句来源
     After analyzing third harmonic, it is showed that, in some range of definite frequency, the increase in the gain-bandwidth of the subtracting operational amplifier will effectively reduce the amplitude of third harmonic.
     对实验数据的三次谐波的分析表明,在一定频率范围内,提高减法运算放大器的增益带宽能有效减少三次谐波的幅度。
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  “减法”译为未确定词的双语例句
     Determination of Fe 2O 3, Al 2O 3, CaO, MgO, MnO 2, NiO, TiO 2 with emission spectrum method and determination of K 2O, Na 2O with flame photometric method were studied. The content of SiO 2 was got by difference method.
     本文研究了发射光谱法测定Fe2 O3 、Al2 O3 、CaO、MgO、MnO、NiO、TiO2 和火焰光度法测定K2 O、Na2 O ,然后以差减法得出SiO2 含量。
短句来源
     Asparagus bean absorbed 48. 6% of P2O5, 21. 7% of N and 28. 0% of K2O from soil, others were supplemented by fertilizing and root nodule bacterium.
     据差减法计算,豇豆吸收N的46.8%、P2O5的21.7%、K2O的28%来自于土壤,其余养分则由施肥及根瘤菌作用补充。
短句来源
     Hg22+was oxidized HG2+by KMnO4 solution and determined Hg22+ and Hg2+. At last,counted Hg、Hg22+Hg2+ Content of the Sample by means of Sbutraction.
     另一份用高锰酸钾氧化Hg22+为Hg2+,测定Hg22+、Hg2+含量,然后用差减法求出Hg、Hg22+和Hg2+的含量。
短句来源
     ResultsIn substraction ,the left MFG、IFG、SPL、IPL、AG、STG, the right MFG、 SPL、 IPL , bilateral visual association cortex and cerebellum wereactivated.
     结果:减法任务中,明显激活左侧MFG、IFG、SPL、IPL、AG、STG,右侧MFG、SPL、IPL以及两侧视觉联合皮质、两侧小脑半球。
短句来源
     This amplifier is used in the sampling-holding and inter-stage subtract-gain circuits of a 10-bit, 30 MHz pipelined A/D converter.
     这种放大器用于 10位分辨率、30MHz采样频率的流水线式A/D转换器的采样 保持和级间减法 增益电路中 .
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  subtraction
Analysis of different waveforms obtained by subtraction of the ERP to the central stimulus from the ERP to the complex stimulus showed that unconscious stimulus processing in adult subjects is not reflected in the ERP structure.
      
Conditions for enhancing image contrast by the digital subtraction of X-ray projections registered at different spectrum distributions in the energy range of 5-25 keV are considered.
      
Background Subtraction in Experimental Data Arrays Illustrated by the Example of Raman Spectra and Fluorescent Gel Electrophores
      
It is shown that splines of degree 2.5 are more stable as compared to the cubic splines, which suggests that the random error arising from the subtraction of the residual current is reduced when the spline degree decreases from 3 to 2.5.
      
Mitochondrial genes overexpressed in human and monkey B-cell non-Hodgkin lymphomas (B-NHLs) were sought via subtraction hybridization, cloning, and differential screening of the resulting cDNA libraries.
      
更多          
  subtract
This procedure allowed us to systematically subtract the subspectra from the different neighborhood configurations of the resonant 57Fe atom.
      
The one-pixel wide skeleton is finally acquired by carrying out the HMTs of two structure elements and the SUBTRACT and OR operations.
      
In the latter case we use a microscope objective in front and a lens behind the fiber and subtract their group dispersion, which is measured by a technique of tandem interferometry including also a Michelson interferometer.
      
A boric acid precolumn is reported for the first time to completely subtract the alkanolamines.
      
It is therefore crucial to examine alterations occurring in the cytoskeleton as a result of postmortem delay and subtract these from those caused by the disease.
      
更多          
  soustraction
La technique que nous proposons associe une ostéotomie basimétatarsienne de valgisation par soustraction externe ainsi qu'une grande libération métatarsophalangienne.
      
Une introduction non classique aux algorithmes d'addition et de soustraction
      
Rehaussement par soustraction spectrale et compensation des etres manquants pour la reconnaissance robuste du locuteur et de la parole.
      
  subtracting
The sympathetic tone was measured by subtracting the PT contribution from the spectrum power within the range of 0 to 0.2 Hz by means of regression.
      
A method is proposed for improving the signal-to-background ratio by subtracting the matrix element spectra from the total background of the gamma-ray spectrum of the irradiated test sample.
      
Different techniques are proposed for the isolation of the analytical signals from the total voltammetric signal using postelectrolysis and subtracting voltammograms.
      
Different techniques are proposed for the isolation of the analytical signals from the total voltammetric signal using postelectrolysis and subtracting voltammograms.
      
Measurements were performed at 400 nm; the negative peak was obtained by subtracting the absorption spectra of myoglobin (Mb) before and after oxidation.
      
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Decompose lithium ores with a mixture of HF and H_2SO_2, expel HF by evaporation. Separate Fe and Al. by means of urea, and separate Ca by precipitation with saturated oxalic acid. The interference of potassium may be corrected by calibration curve method. The amounts of Li_2O (apparent) and K_2O in solution may be determined by flame photometry. The actual lithium contents obtained by method of difference have been compared with that of control samples contaning Li_2O<0.11%, the absolute deviation is found...

Decompose lithium ores with a mixture of HF and H_2SO_2, expel HF by evaporation. Separate Fe and Al. by means of urea, and separate Ca by precipitation with saturated oxalic acid. The interference of potassium may be corrected by calibration curve method. The amounts of Li_2O (apparent) and K_2O in solution may be determined by flame photometry. The actual lithium contents obtained by method of difference have been compared with that of control samples contaning Li_2O<0.11%, the absolute deviation is found to be less than .03%.

將含鋰矿样用HF—H_2SO_4分解,并蒸发除去HF,然后用尿素分离Fe和Al,以真飽和草酸分离Ca真至于鉀对鋰的影响,可用校正曲线法改正。溶液中鋰(待校正的)及鉀的含量均用火焰光度法测定。用差减法所得真实鋰含量与管理矿样比较,其耙对誤差(当Li_2O%小于0.11%时)小于+0.03%

Highly polar stationary liquids are synthesized by the cyanoethylation reaction.On these polar liquid phases the extra retention of aromatics relative to alkanes is sufficient to secure complete separation of alkanes from aromatics in the boiling range of aviation kerosene.By the use of a pre-column containing molecular sieve 5A as a subtractor,the three principal groups of hydrocarbons,i.e.aromatics,normal alkanes,and isoalkanes with naphthenes,in aviation kerosenes can be determined simultaneously.The subtractive...

Highly polar stationary liquids are synthesized by the cyanoethylation reaction.On these polar liquid phases the extra retention of aromatics relative to alkanes is sufficient to secure complete separation of alkanes from aromatics in the boiling range of aviation kerosene.By the use of a pre-column containing molecular sieve 5A as a subtractor,the three principal groups of hydrocarbons,i.e.aromatics,normal alkanes,and isoalkanes with naphthenes,in aviation kerosenes can be determined simultaneously.The subtractive gas chromatography can also be used to determine the individual components of normal alkanes.The accuracy and reproducibility of this method are given.

用氰乙基化反应合成的强极性固定液制成强极性色谱柱!与分子筛柱串联,结合分子筛扣减技术,测定了几种航空煤油油样中正烷烃、芳烃、异构烷加环烷三个烃族组成。进一步用一种弱极性色谱柱与分子筛柱串联,由分子筛扣减法可测定各单体正构烷烃的含量,对所提出的方法的准确度和重复性进行了讨论。@汪燮卿$用氰乙基化反应合成的强极性固定液制成强极性色谱柱!与分子筛柱串联,结合分子筛扣减技术,测定了几种航空煤油油样中正烷烃、芳烃、异构烷加环烷三个烃族组成。进一步用一种弱极性色谱柱与分子筛柱串联,由分子筛扣减法可测定各单体正构烷烃的含量,对所提出的方法的准确度和重复性进行了讨论。

The present paper is concerned with a study of 1-pheuylthiocarbohydrazide (PTCH) as a reagent of spectrophotometric determination of chromium and vanadium. The machanisms for the reactions between Cr_2O_7~m,Vo_3~- and PTCH under testing conditions have also been investigated, namely (yellow)+2CrO_2~-(or Cr~(++))+3H_2o (1)The red ternary complex (or ion-pair) can be extracted with amyl alcohol. The analogous reaction (1) for vanadium is occurred, but that of (2) is absent. Thus the concentration of vanadium in...

The present paper is concerned with a study of 1-pheuylthiocarbohydrazide (PTCH) as a reagent of spectrophotometric determination of chromium and vanadium. The machanisms for the reactions between Cr_2O_7~m,Vo_3~- and PTCH under testing conditions have also been investigated, namely (yellow)+2CrO_2~-(or Cr~(++))+3H_2o (1)The red ternary complex (or ion-pair) can be extracted with amyl alcohol. The analogous reaction (1) for vanadium is occurred, but that of (2) is absent. Thus the concentration of vanadium in mixture solution can be measured by difference.Optimal conditions for colour development in chromium(Ⅵ) and vanadium (Ⅴ) PTCH system are: acidity 0.2-6×10~(-2)MH_2so_4, and heating at 65-70℃ for 5 minutes; the wavelengths of maximal absorption for chromium is 490nm(red ion-pair),and the molar absorptivity is 1.0×10~4; 424nm for chronium and vanadium (yellow products).Making use of the reagent for determination of chromium and vandium in the water of the Yellow River, waste water, seme metallic salts as well as soil,we obtained satisfactory results.

本文研究应用1-苯基硫代卡巴肼(PTCH)作为铬和钒的连续光度法试剂。反应机理是红色三元络合物能被戊醇萃取。钒有类似的反应(1),但无反应(2),故可由差减法求得。试剂的选择性较好。以之用于水、污水、土壤、某些金属盐类中铬或钒的测定,结果尚为满意。

 
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