1. heat absorbed or radiated during a change of phase at a constant temperature and pressure. 
   在恒定的温度和压强下某物质改变状态时所吸收或放出的热量。
2. a line traced by a point traveling in a constant direction; a line of zero curvature. 
   一个点在一个方向上移动所产生的线；有零个弯曲的线。
3. With radar equipment and heat radiation detectors, these satellites can keep a constant watch on enemy nations. 
   有了雷达设备及热幅射探测器以后，这些卫星能够永久监视敌国的动向。
4. Liquid water is still hydrogen bonded at 100C as indicated by its high heat of vaporization and dielectric constant. 
   由于蒸发比热及绝缘系数较高，液态水在100℃时仍然存在着氢键。
5. hold the line on prices; keep the price of something constant. 
   保持价格不变；保持某种东西的价格不变。

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• 1. 等过热线
  投资过热high demand for investment...等过热线constant super-heat line...过热面perheating surface
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