... 随机取样试验 random sampling test 分段升温取样试验 Step dyeing 分段取样试验 Step Dyeing ...
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很少有实验报道随机取样的方法。内含的试验方法的质量一般很弱。三种试验分别为随机取样、双盲法、安慰剂给样试验。
The methodological quality of included trials was generally "poor." Few trials reported methods of randomization. Three trials were randomized, double blind, and placebo-controlled.
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