Transfer 2.0 mL of this solution to a 50-mL volumetric flsk, dilute with Buffer solution to volume, and mix.

移取2mL此溶液到50mL容量瓶中并用缓冲溶液定容至刻度，混匀。

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Secondly, we expand the scope of detectable flow parameters by using image method in dilute phase flow regime, and achieve measurement of volume voidage.

其次，扩充了在稀相流动中，用图像法可检测到的流动参数内容，实现体积空隙率的检测。

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Also, greater water volume helps dilute a river's chemical content.

另外，大量的水有助于稀释河里的化学成分含量。

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