Method: This clinical research adopts randomized blocks, double-blind and placebo control.
方法：采用区组随机、双盲、安慰剂平行对照临床试验。
The comparison of 22 varieties of Sichuan lacquer tree under identification and 7 control varieties is made with the design of completely randomized blocks.
本研究采用完全随机区组设计，对四川漆树22个审定品种和7个对照品种作对比试验。
The field experiments were designed with randomized blocks of 3 replications in 2 areas and involved 248 families of F2:3 . 10main agronomic characters (including yield) were tested .
将248 个F2：3家系按随机区组三次重复在不同的两个试验点进行种植，考察了包括产量在内的10 个重要农艺性状。
With randomized blocks design we studied the washing effects of 4 kinds of detergents.
本研究用随机区组设计，研究了不同洗涤剂对洗脱头发表面外污染氟的洗涤效果。
With randomized blocks design we studied the washing effects of 4 kinds of detergents.
本研究用随机区组设计，研究了不同洗涤剂对洗脱头发表面外污染氟的洗涤效果。
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