The design and manufacture of hot runner plates, including its runner, heating mode, calculation of thermal power, compensation for thermal expansion amount and sealing, etc. were discussed in detail.

详细讨论了热流道板的流道设计、加热形式及热功率计算、热膨胀量补偿以及密封等问题，并对流道板的制造方法作了介绍。

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This paper puts forward a calculation method to define the ratio of district heating and electricity generation in a cogeneration power plant.

引入了能级比和纯供热耗热的概念，提出了对应的热电比计算方法。

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The structure design and the calculation of the sizes, heating power, linear swell value of hot runner system were discussed in detail. A two-step demoulding mechanism was also introduced.

详细介绍热流道模具浇注系统结构设计和尺寸计算、热流道板加热功率计算、热流道板线膨胀量计算及在设计时应注意的一些问题，并介绍了一种二级脱模机构。

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