预试验 meaning in Chinese

pilot experiment
preliminary examination
preliminary test
pretest
trial test

Test methods for sampling wood preservatives prior to testing
木材防腐剂预试验的抽样试验方法
Preliminary test of resin and it ' s products used as food packaging materials
食品包装用树脂及其制品的预试验
A pretest study on poster and foldout materials of childhood immunization iec strategies in guizhou province
策略宣传画及预防接种证插页预试验研究
Pre - testing evaluation for social function dimensionality newly added in the work ability index questionnaire
工作能力指数法新增社会功能维度预试验评价
The pretest analysis of the program on hygiene effect and health education need assessment on the rural marsh gas construction and comprehensive utilization
农村沼气建设及其综合利用的卫生效果项目预试验分析

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