查询词典 quota sampling

Group sequential sampling plan：分组连续抽样法

group sequential sampling 分组序贯抽样 | group sequential sampling plan 分组连续抽样法 | group shelterwood cutting 群状择伐

sequential sampling inspection plan：逐次抽样检查方案

逐次抽样 sequential sampling | 逐次抽样检查方案 sequential sampling inspection plan | 逐次搜索法 sequential search

Probability ratio sequential test：机率比值逐次试验

Probability proportional sampling 机率比例抽样 | Probability ratio sequential test 机率比值逐次试验 | Probability sampling 机率样本

stratified simple random sampling：分层简单随机抽样

stratified sampling 分层抽样 | stratified simple random sampling 分层简单随机抽样 | stratum 层

precision of simple random sampling：简单随机抽样精密度

precision of sampling 抽样精密度 | precision of simple random sampling 简单随机抽样精密度 | precocious 早熟的

simple sampling：简单抽样

simple reflex 简单反射 | simple sampling 简单抽样 | simple sampling inspection plan 简单抽样检查方法

simple sampling without replacement：简单不重复抽样

simple sampling inspection plan 简单抽样检查方法 | simple sampling without replacement 简单不重复抽样 | simple schizophrenia 单纯型精神分裂症

stratified sample：分层样本

Stratified random sampling 分层随机抽样 | Stratified sample 分层样本 | Stratified sampling 分层抽样

Stratified random sample：分层随机样本

Stratified purposive sampling 分层立意样本 | Stratified random sample 分层随机样本 | Stratified random sampling 分层随机抽样

stratified purposive sample：分层立意样本

分层一段抽样 stratified one stage sampling | 分层立意样本 stratified purposive sample | 分层立意抽样 stratified purposive sampling

BOXEN INTERNATIONAL LIMITED：(博成国际有限公司)

571908 BOWEN PROPERTY AGENCY LIMITED (宝云置业有限公司) | 380193 BOXEN INTERNATIONAL LIMITED (博成国际有限公司) | 159389 BOXYUE LIMITED (博誉有限公司)

air filter：空气过滤器

空气过滤器(air filter)指用于制备无菌空气的纤维介质床或超细滤膜过滤器. 纤维介质主要是棉花,常用的滤膜是玻璃纤维滤膜和孔径为0.2μm的聚四氟乙烯滤膜. 过滤器使用前本身应用蒸气或其他方法灭菌. 通过过滤器的空气事先进行除尘、除水滴,