This paper has made a thorough study on its properties and delved further into its mechanism of compensation on cement concrete shrinkage by adding concrete expansive agent.
本文通过在普通混凝土中掺加膨胀剂对补偿收缩混凝土的性质进行了研究，并就膨胀剂对混凝土补偿收缩的机理进行了探讨。
But owing to the complexity of power transmission systems, it is hard to determine the optimum capacity and economic benefit on adding devices for reactive compensation.
但都由于输电系统的复杂性，而不能确定增设无功补偿装置的最佳容量和经济效益。
As shown by the example, optical and mechanical athermal compensation is obtained without adding the complexity of optical and mechanical structures.
设计实例表明，采用这个方法可以在不增加光学和机械结构复杂度的情况下得到良好的光机被动无热化效果。
As shown by the example, optical and mechanical athermal compensation is obtained without adding the complexity of optical and mechanical structures.
设计实例表明，采用这个方法可以在不增加光学和机械结构复杂度的情况下得到良好的光机被动无热化效果。
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