多水准连续抽样计画 sampling plan multi-level: 多层次抽样计划reception sampling plans: 验收取样方案two-sided sampling plans: 双限抽样检验方案continuous sampling: 连续采样; 连续抽样; 连续进取; 连续取样multi level: 多级别的下载手机词典可随时随地查词查翻译