error in test

• 试验误差

error in test的用法和样例：

例句

1. Within the range of the test,the germicidal efficacy of the three disinfectants decreased with decreasing temperature and increasing pH value and organic substance concentration.
   但在相同浓度条件下，对天然水消毒，二氧化氯消毒液比消毒粉作用时间更长，此可能是试验误差所致。