... Temperature coefficient温度系数——计及吸气过程中的气体被加热，表征行程容积利用程度的系数 gas seal coefficient气密系数 gas leak coefficient泄漏系数——计及气缸部分各部位压缩介质的泄漏，表征吸入气量利用程度的系数 ..
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塑封集成电路因其是非气密性封装，封装材料热膨胀系数的不同以及被粘接材料表面能低，是造成塑封电路离层或开裂的内部原因。
First of all, the internal reason for the delamination or cracking is the different CTE of the packaging materials and the low surface energy of the adhesions.
指出对质量流量影响最大因素依次为蒸气密度、可膨胀系数、节流件内径及流量系数。
Also the paper lists the factors mostly affecting the mass flow measurement consecutively as steam density, expandable coefficient, inner diameter and flow coefficient of the throttle element.
建筑外窗的传热系数大，气密性差，是建筑能耗的重点部位。
The building's outer Windows with a large heat transfer coefficient and a poor leak tightness are the key positions, where energy is consumed.
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