In many cases, it is unnecessary to dilute the sample solution prior to analysis.
In many cases, it is unnecessary to dilute the sample solution prior to analysis.
在许多情况下，在分析之前也不必要稀释试样。
In many cases, it is unnecessary to dilute the sample solution prior to analysis.
在许多情况下，在分析之前也不必要稀释试样。