This paper describes the cylinder test with T2Y copper pipe in which the initiation method background light source are simplified.

本文叙述了采用T_2Y紫铜管的园筒试验，其引炸方式与背景光源均作了简化。

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I also had fun doing the background and setting up the light source.

我也喜欢研究背景和布置光源。

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To overcome the interference of background light, a new turbidity measurement method is described which uses light with modulated intensity as source.

为避免背景光的干扰，本文提出了采用调制光强测量浊度的新方法。

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