- 相关词组
- stratified sampling分层抽样;分层抽样法;分层取样
- stratified sampling method分层抽样法
- stratified sampling of water分层取水样
- stratified single-stage cluster sampling分层单级整群抽样
- submarine sampling海底取样
- syringe sampling注射器进样
- stratified one-stage cluster sampling分层单级整群抽样
- stratified randon sampling分层随机抽样法
- stratified simple random sampling分层简单随机抽样
- stratified random sampling method分层随机抽样法
- stratigraphical sampling分域采样
- stratified systematic sampling分层等距抽样
- speed sampling pulse速率取样脉冲
- stratified multistage sampling分层多级抽样
- stratified sampling for proportions比例的分层抽样
- stratified proportional sampling分层比例抽样
- symmetry sampling technique对称抽样方法
- stratified probability sampling分层概率抽样法
- surface water sampling表层采水
- stratified random sampling分层任意抽样;分层随机抽样;分层随机取土样
- 今日热词
- 热门搜索
- boring adj.无聊的，无趣的;令人厌烦的;单调的，乏味的;n.钻孔;钻屑;
- tank n.(贮放液体或气体的)箱，槽，罐; 箱(或桶等)所装之物; 一箱(或一桶等)的量; 坦克;vt.把…贮放在柜内;打败;彻底失败; 破产; 倒闭; (尤指故意)输掉(比赛);
- amateur n.业余爱好者;外行，生手;adj.业余的，非职业的;外行的;
- deliberately adj.故意的;从容的;adv.不慌不忙地;
- unrest n.动荡，不安定;骚乱;风潮;乱腾;
- offend v.冒犯;（使）反感/不快;违法;违背;
- mysql n.一种关系型数据库;数据库；资料库；数据库服务器
- widespread adj.分布广的，普遍的;
- let me hear 让我听听;让我听见
- passport n.护照;途径，手段;
- undivided adj.未分开的;全神贯注的;一心一意的;得到某人的全心关注;
- registration fee n.注册费;
