Its maximum absolute error is about ? 3g and maximum relative error is only about 0 . 4 % . evapotranspiration of tomato measured by our apparatus in laboratory during a consecutive period presents very well its change in reality 其测定值能较好地反映植物在短?段内的蒸散变化情况，是一种比较方便实用的测定盆栽植物蒸散的仪器。
Based on the lambert - beer ' s law and considering the determination of ultramicro amounts of substances by aas , an approximate linear relationship between the transmittancy and concentration of the measured substance was derived 摘要对原子吸收光谱法在超微量测试中，给出了朗伯比耳定律的近似公式，建立了测定值和透光度的变化值之间的近似线性关系。
Then formation of three disulfide binds of hw - ma and rgd - hw was monitored by reversed - phase hplc using air oxidization or reduced and oxidized glutathione respectively . the synthetic peptide was purified by double reversed - phase hplc 用hplc分离纯化，得到的合成产物经质谱鉴定， hw一ma和rgd一hw粗肤的实际测定值和复性后突变体理论值都一致，证明合成和氧化复性是成功的。
3 . the exposure time and recovery time of the optode membrane are 5s and 25s respectively . the reversibility of the fluorescence signal was evaluated by alternate measurements in air saturated water and nitrogen - purged water . the relative standard deviation 与标准法相对照，用本仪器系统测定了不同盐度的人工海水中的溶解氧浓度，两种方法在不同浓度水平下的溶解氧测定值均无显著性差异。
The chemiluminescence biosensor measured 25 + 75 + 6 . 5mm in dimension , and was readily produced in analytical laboratory . the sol - gel method is introduced to co - immobilize horseradish peroxidase ( hrp ) and luminol in the microreactor , and to immobilize uricase in the enzymatic reactor 该传感器芯片能重复使用200次而无明显变化（测定值rsd小于5人该传感器芯片成功用于血清中葡萄糖的测定，结果令人满意。
A review with 11 references is given on the establishing principle and method of normal reference value of elements in human hair and blood including the definition , determination , expression , transference , and significance of reference value 摘要从参考值的定义、确定、表述、移植，及其意义等五个方面介绍了人体头发和血液微量元素正常参考值的确定原则及方法，重点介绍了可供实际操作的测定值统计法（复杂统计处理法）和文献值移植法（近似参数处理法） 。
Finally , the mutual spreading between the sample zone and the carrier solution in flow injection analysis ( fia ) would always result in the sample zone ' s widening and reducing the sensitivity ( obviously , the case in which the carrier solution was the reaction reagents was not included ) 该传感器芯片保存于冰箱（ 4oc ） 10天后无明显变化，且能连续重复使用200次而无明显变化（测定值rsd小于5 ） ，该传感器芯片成功用于血清中尿酸含量的测定，结果令人满意。
Abstract : in this paper , the kinematically admissible velocity fields are established by using the metal flow patterns based on the experiments , and the configuration dimensions of billet and the curves of load - stroke in precision forging process for spur gear from solid billet are simulated on computer by upper bound method . the results acquired in the simulation are in good agreement with those obtained in the experiments 文摘:本文利用有实验根据的变形流动模式建立动可容速度场，利用上限法模拟用实心坯料精锻直齿圆柱齿轮时坯料的外形尺寸变化和力?行程曲线，所得结果与实验测定值很一致，可供冲挤精锻工艺设计参考。
At the same time , the intrapartical diffusion and liquid internal mass transfer can been enhanced by ultrasound field , owing to additional stirring , the increasing rate of intraparticle diffusion coefficient is enhanced , while that of the liquid film mass transfer coefficient is reduced under ultrasound field 模型研究表明： freundlich ?两相阻力模型计算得到浓度与实验测定值非常吻合，超声场能有效地强化浸取粒内扩散与液膜传质，搅拌作用下超声强化液膜扩散的的能力降低，强化粒内扩散的能力增强。
During the low strain dynamic test of the foundation pile , the adoption of the velocity sensor to the direct measurement of the relative displacement of the pile head is helpful to reducing the improper dependence upon the measured intrinsic frequency valuesof the pile soil system in calculating vertical bearing capacity of the single pile , and is hence conducive to raising the accuracy of the calculated vertical bearing capacity of the single pile 基桩低应变动测中，采用速度传感器直接测出桩头的相对位移，在推算单桩竖向承载力时，有助于降低对桩土体系固有频率测定值的过分依赖，从而有利于提高单桩竖向承载力推算值的准确程度。
