他针对吸二手烟的影响进行了一次严谨的实验。
He conducted a rigorous experiment on the effect of second hand smoking.
文献内容所依赖的论据，全部都由严谨的实验方法和统计学方法验证过。
These papers use rigorous experimental and statistical methods that improve validity of the evidence presented within them.
要实现包装减量化的环保目标就要以科学严谨的实验和检测来指导包装设计。
In order to meet the requirement of the reduced packaging, it is essential to use the scientific and precise experiment and test to instruct the packaging designing.
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