恒重

用已烘干至恒重的G4玻璃坩埚过滤。

Filter the mixture with a G4 glass crucible pre-dried to a constant weight .

论述绍了在冶金废水悬浮物分析中水样的代表性、滤纸的恒重及对盐分的吸附等需要注意的一些问题。

The problems of representativity of water sample , constant weight of filter paper and absorption of salt in the analysis of suspension of metallurgical waste water are discussed .

空气中总悬浮微粒（TSP）测定恒重方法的改进

Improved Constant Weight Measures in Ambient Air TSP Determination

采用微波干燥重量法测定环境水样中悬浮物的含量，确定了微波干燥的最佳条件。悬浮物为0.5g左右时，微波功率为540W，恒重时间为7min；

The suspended substance in water sample was determined with microwave drying .

而混合法合成的负载型磷化钨催化剂前体，由于载体与活性组分相互作用较弱，在700℃氢还原时达到恒重，大部分生成WP。

Supported tungsten phosphide catalyst precursors synthesized by mixing method reached at constant weight at 700 ℃ in H2 reduction and mostly transformed into WP .

混纺产品中各组分的定量测试一般采用化学溶解法，试样在溶前和溶后都需烘至恒重，标准烘干时间需8～9h，严重影响样品的测试周期。

The quantitative test for the components in blended product usually adopts the chemical dissolution method ; the sample needs drying to be constant weight before and after the dissolution for about 8 ~ 9h , which has a strong impact on the test cycle .

坩埚的恒重；

( 3 ) weight of crucibles ;

结果采用烘箱两次干燥法比直接干燥法容易达到恒重。

Results The oven-twice drying was easier than the direct drying to achieve constant weight .

通过条件实验，确定影响含碳酸盐湖泊沉积物有机碳分析的主要因素是清洗操作和空气中吸湿恒重操作。

The main factors controlling determination of organic carbon in sediments were filtering and balance in air .

发现恒重后的双锍盐含有二个结晶水这一新现象，并确认最终产物为聚对苯乙炔。

Based on our determined results , we had found a new phenomenon that the disulphonium salt contains two crystal-waters and the last product is PPV .

本环境监测站目前所用的检测方法还是使用氯仿萃取恒重后对萃取物进行分离红外法和紫外法分析。

The environmental monitoring stations currently used detection methods or the use of chloroform extraction constant weight extracts were separated after the IR and UV analysis .

沉淀分别用氨水和无水乙醇洗涤，60℃干燥，放置干燥器中至恒重。

The deposition was washed by ammonia and ethanol , and the product was dried at 60 ℃, and then put in a desiccator to keep constant weight .

方法：茶叶、诃子、花生壳、五倍子、虎杖、肉桂等植物风干恒重，过20目筛，分别由乙醇提取、水溶、乙酸乙酯反萃，得提取物。

Methods : Samples from tea , myrobalan , shell of peanuts , Chinese gall , Chinese cinnamon and giant knotweed were obtained by drying to consistent weight ;

试验结果表明，超滤浓缩恒重法测得聚合物浓度的相对误差小于1.0%，满足现场检测的要求。

The experiment results show that using the method above the relative error is less than 1.0 % of the polymer concentration , which can meet the needs of field determination .

预处理条件的确定即用15%的氢氧化钠溶液浸泡秸秆24小时后，过滤并用沸水洗去碱液，在75℃下干燥至恒重；

Pretreatment condition is 15 % NaOH solution steep com 24h , filtrate and take boiling washed alkali liquor , and drying to constant weight in 75 ~ ( . ) C ;

取右上、中叶先称取湿重，然后在48℃烘干72小时至恒重，用于肺组织干/湿重（D/W）测定。

To determine the lung dry / wet weight ratio , and the right upper / middle lung was removed and dried to a constant weight ( 48 ℃ for 72h ) .

在混纺织物组分分析试验中，由于反应后纤维量较少，对试样的烘燥很难达到GB/T99951997规定的恒重要求，故无法掌握具体的烘干时间。

In composition analysis of blended fabric , drying degree of sample is difficult to meet the standard of constant weight according to GB / T 9995-1997 due to little fiber content after reaction .

在雷竹竹鞭笋芽分化期（8月至翌年4月）用恒重法、伯川法和双缩脲法对雷竹竹鞭的含水量、糖类和蛋白质含量进行测定。

The moisture content , carbohydrates and protein contents of Lei bamboo rhizome during the period of the mixed bud differentiation were measured by use of constant weight , colorimetric method and biuret method .

精量一定体积的提取样品，将其烘干达恒重，用所测有效部位含量与之相比，以计算所含有效部位纯度。

The Precise test sample volume was took and dried until constant weight . The purity was measured through the comparison between the content of effective parts and the net weight of extract . 3 .

并得出功率与干燥时间的关系：随着功率的提高，试样干燥时间越短，恒重时含水量越小，干燥效果越好。

The relationship between power and drying time was also concluded that : with increasing power , the drying time of the sample became shorter , the water content became smaller , and drying efficiency became better .

介绍了优化鳍片管的恒肋重法，并与传统的计算方法进行了对比验证。

In this paper , the new optimization method , constant fin scale method , on the longitudinal fins is introduced and compared with traditional method .

恒速滴重法测定动态界面张力

Study on Measuring of Dynamic Interfacial Tension by Drop Weight Method under Constant Flow Rate

恒熔速重熔渣温，熔速在过程中保持恒定；恒熔池深度重熔渣温、熔速随过程降低。

For constant melting rate they remain unchanged and for constant metal-pool depth they decrease gradually .

利用恒速升温热重法对低温下碳的气化反应进行了研究。

The Boudouard reaction of carbon at low temperature was investigated by means of thermogravimetric method at constant heating rate .

恒加载力高速重负荷荒磨是大型钢坯修磨和重型轧辊粗加工的基础工艺。

Rough grinding with constant loading force and high-speed heavy-duty is the basic process for large steel conditioning and heavy roll rough machining .