With randomizedblocks 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。
2
Method: This clinical research adopts randomizedblocks, 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。
3
The comparison of 22 varieties of Sichuan lacquer tree under identification and 7 control varieties is made with the design of completely randomizedblocks.