常見例句雙語例句DESIGN: Random cluster sampling methods and a cross-section survey.設(shè)計：隨機(jī)整群抽樣，橫斷麪調(diào)查。Its main work includes the Yellow River sediment cross-section tests, river bed surface quality sampling and particle size distribution analysis and so on.其主要工作內(nèi)容包括黃河河道斷麪淤積測騐，河道表層河牀質(zhì)取樣及顆粒級配分析等工作。 返回 sampling cross-section