Based on field tests of low concentration cross-linked polymer, factors influencing the gelling properties of wellhead sampling are analyzed and studied through evaluating the properties of closed wellhead sampling.
依据低浓度交联聚合物驱现场试验,通过评价井口密闭取样性能,分析和研究了影响井口取样成胶性能的因素。
The direct sampling and the constant volume sampling(CVS) were investigated on a emission test system for engine certification inspection,and a physical model was established to correct the dynamic delay of the emission test system in order to conduct dynamic emission measurement.
在发动机排放认证测试系统上,分别采用直接取样及定容稀释取样两套方案,通过大量的试验研究,建立了合适的系统响应修正模型。
For safety we should use dual valves to aid safe pressure reduction, and cap the sample outlets.
为了安全起见我们要在取样点设双阀以便于安全的压降，取样口还要加护罩。
Using the results of tuyere coke sampling to guide blast furnace operation
风口焦炭取样研究对高炉操作的指导
In the initial stages of the development of samplers, an open container or bucket was used to dip samples from a stream.
最初的取样器是开口的容器或筒，直接从河中提取水样。
The port drug inspection office shall fetch the inspection samples at the sampling place specified in the Imported Drugs Port Inspection Notice,
口岸药品检验所按照《进口药品口岸检验通知书》规定的抽样地点，抽取检验样品，
The welfare effects of an import quota further depend on how the government allocates the legal rights to import.
进口配额的福利影响还取决于政府怎样分配合法的进口权利。
auger method (for sampling pulp)
（纸浆取样）钴取法
"The point of sampling should preferably be at the point of usage, but occasionally it would be useful to sample at the point of entry of the water to the establishment."
"取样点要选择经常使用的地方,但偶尔情况下,在进入建筑物入口进行取样也很必要。"
standard error of sampling
取样标准误 取样标准误
matching to sample method
取样匹配法取样匹配法
The product flows into the dip tube and out the valve outlet in a flow path shaped like the letter" C".
产品流进从汲取管，从阀门排气口流出，流程形状象字母”C”一样。
You don't know how lucky you are.All you do is make fun of people with your wisecracks.I don't like that about you.
你得福不知，只管口轻薄取笑人家，我不喜欢你这样。
Why do we put forward the three closely related slogans of "consolidate the peace", "fight for democracy", and "carry out armed resistance"?
为什么提出“巩固和平”、“争取民主”、“实现抗战”这样三位一体的口号？
A type of survey design in which one sample is drawn from the population at a point in time.
一种调查设计方法.每一个时间点从人口中抽取一个样本.
Gelling Properties of Wellhead Sampling io Field Application of Cross-linked Polymer
交联聚合物驱现场应用中井口取样成胶性能研究
Detection Rate of Oral Candida albicans with Different Sampling Methods among Elderly:A Comparative Study
不同取样方法对老年人口腔感染白色假丝酵母菌检出率的比较
Thirdly, it will take necessary steps to ensure that these stolen artifacts are banned from importation and exportation in US and request other countries to do the same.
第三、采取必要的措施，禁止被抢的文物在美国进口或出口，并要求其他国家作出同样的行动。
"In statistics, a common example is the difference Between the mean age of a given group of people and that of a sample drawn from the group."
在统计中一个常见的例子即为人口平均值与人口取样之平均值间的差异
The port drug inspection office shall conduct inspection on the samples it fetched in good time, complete the inspection within 20 days from the day when the sampling is done,
口岸药品检验所应当及时对所抽取的样品进行检验，并在抽样后20日内，完成检验工作，