同时也尝试了一种聚苹果酸简易测定方法——分光光度法，但是这种方法还需要做进一步的研究才有可能适用于聚苹果酸浓度的测定。
And try an easy method of poly malic acid's determination - spectrometry, but this method needs further researching, so it can be used in determination of poly malic acid.
空气污染是很复杂的技术问题，很难测定出来，但有几种简易方法来检测房屋附近的空气污染度。
It's a complicated technical issue and it's difficult to know what you're looking for.But there are a few easy ways to check for air pollution near your house.Read on to learn more.
本文详细描述了一种能够快速测定的简易测试方法。
In this elaboration, a simple test method is described which allows a quick evaluation.
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