Study has been made on producing concrete hollow block using steel slag.
对用钢渣生产混凝土空心砌块进行了研究。
The study was randomized complete block design and differentiated weight by block.
采用随机完全区组设计，以体重为区间。
Objective To study the clinical application of nerve block anesthesia in space of psoas major.
目的了解腰大肌间隙神经阻滞的临床应用。
Methods Randomized block design was adopted in this study.
方法实验采用配伍组设计。
Methods Randomized block design was adopted in this study.
方法实验采用配伍组设计。
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