The bottle should not be allowed to touch the bottom in the sampling to avoid stirring up the sediment. 為了避免在採樣過程中攪起沉積物質，瓶子不得接觸水底。
ASM can modify sampling intervals in time according to the variations of signal frequency in every signal cycle and finish a sampling process in a signal cycle. 近似同步法根據信號頻率的變化實時地調整採樣間隔，並且只需一個信號周期就可完成一次採樣過程。
We consider that equal-ratio sampling method is suitable for the successive and unsteady emitting status of waste water. 並認為等比例採樣法是連續不穩定排放方式比較適合的採樣方法。
The distribution of particle concentration in the cyclone tube was measured by isokinetic sampling method. 採用等動採樣方法對旋風管內的顆粒濃度分佈進行了系統測量。
