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1)  Natural sedimentation method
自然沉降法
1.
[Methods]Natural sedimentation method was used for the sampling according to the Hygienic Standard for Hospital Disinfection (GB 1598 2-1995) and the Technological Standard for Hospital Disinfection in 2002.
方法按《医院消毒卫生标准》(GB15982-1995)和《医院消毒技术规范》2002规定的自然沉降法采样。
2.
In order to know the status of bacterial contamination of air of clean operating room in the course of operation and its influencing factors,natural sedimentation method was used to sample the air of 10 clean operating rooms.
采用自然沉降法对10个洁净手术室空气进行采样检测。
2)  natural precipitation method
自然沉降法
1.
The natural precipitation method was performed for 10-minute exposure, and the impacting method was performed by FA-1 airborne bacteria sampler at flow rate of 28.
目的探讨自然沉降法和撞击法监测室内细菌总数的捕获效果。
3)  plat natural sedimentation method
平板自然沉降法
1.
Methods To use the plat natural sedimentation method,collect the specimens of the air and count the germs at every 10min under the static state and working condition from BSC room pasteurized and purified and the fringe area of BSC pasteurized only.
方法采用平板自然沉降法对生物安全柜内消毒净化的空气及柜外周边区消毒空气,在静止和工作状态下每隔10min进行空气采样并计数细菌数。
4)  natural sedimentation
自然沉降
1.
Its operating principle lists as follows: first flushing fluid expelled from wellhead is decompressed throw sieve vessel,then sand,water and oil are separated by way of double natural sedimentation,finally,oil is recovered,water is recycled,and sa.
其工作原理是将井口排出的洗井液经筛管降压,然后经过二级自然沉降,将砂、水、油分离,油进行回收,水重复使用,砂定期排出。
5)  free settling
自然沉降
1.
The free settling experiments for high-concentration material slurry of cement-full tailing backfill at a different ratio and different concentration are conducted and the effects of the related factors on settling property of the slurry are analyzed.
对不同配比的高浓度水泥全级配尾砂充填料浆进行自然沉降试验,分析相关因素对沉降特性的影响。
2.
Free settling tests for tailings from the concentrator in the previous period were carried out.
对选矿厂尾矿进行了自然沉降试验,结果表明单纯的自然沉降浓缩作业难以达到大幅提高底流浓度的目的。
6)  static settling tank
自然沉降器
补充资料:超速离心沉降法
分子式:
CAS号:

性质:利用离心力的作用将分散体系中的分散质点逐渐沉降,质点越大,沉降速度越大,基于沉降速度与分子量依赖性的原理,来测定高聚物分子量分布的方法。在高分子溶液中,高分子的质量很小,需要超速离心机,在很大的离心力场下才能观察到它们的沉降。离心机转速可达1000r/s以上,得到几十万倍于重力的离心力。超速离心沉降法测量分子量分布,是测定其沉降系数S,S的定义为粒子在单位离心加速度场中的沉降速率,表达式如下:    式中为粒子的沉降速率;r为界面在转轴中心的距离;w为转动角速度。此法适用于分子量1×104~2×107的范围,能获得各种平均分子量。由于S有浓度依赖性,最好选择θ溶剂,溶剂与溶质的折射率差及密度差要足够大。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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