局限性：粪便取样方法已经被标准化了，但是样本大小取决于粪便的稠度。
LIMITATIONS: the fecal sampling method is standardized, but the sample size depends on fecal consistency.
以上结果为在病害调查中确定取样方式与样本大小提供了理论基础。
The findings supply a theoretical basis for selecting sampling mode and sample size for the study of the disease.
研究了气泡直径随操作压力、取样时间的变化规律，以及气泡大小对气浮处理效果的影响。
The rule of changes of the diameters of air bubbles with pressure and sampling time, as well as the effect of the sizes of air bubbles on the result of air floatation treatment were studied.
应用推荐