The effect of preheating, test-piece thickness and coupling agents on the electric properties and the mechanical properties of the materials have been specially studied.
试验结果表明，模压前合理的预热可以显著地提高酚醛塑料的电性能及力学性能；
The preheating and lamp removed protection functions of the electric ballast can be implemented by the IR2153 added a few peripheral components and devices, the operation principle is described.
在I R 2153外围增加少量元器件，可实现电子镇流器的预热和无灯负载时的保护功能，叙述了其工作原理。
The effects on electric properties of PZT ceramic were investigated, including preheating temperature, frequency, environment temperature and polarization.
研究了粉体预热温度、频率、环境温度等工艺参数及条件对PZT陶瓷电性能的影响。
Compared with electric resistance bake-out, thermal bake-out provides better preheating control, so thermal bake-out is a kind of very good method for preheating aluminum reduction cells.
与电阻焙烧相比，热焙烧提供了更好的预热控制，因此热焙烧是很好的预热铝电解槽的方法。
Preheating scrap by flue gases of electric furnace is an energy-saving technology, which has been developed and applied by foreign country for a long time.
电炉烟气预热废钢是一项节能降耗的新技术，国外已开发和使用。
A small electric heating element in an internal-combustion engine that facilitates starting by preheating the air in a cylinder and is used especially in diesel engines.
装在内燃发动机内的小电热器，用以预热气缸内的空气以利发动，尤用于柴油发动机。
The technological scheme of the utility model: the device consists of three parts: a preheating pan of constant temperature oil, a vacuum electric frying pan and a vacuum air extractor.
本实用新型的技术方案：该设备由三个部分组成，恒温油预热锅、真空电炸锅、真空抽气机。
The technological scheme of the utility model: the device consists of three parts: a preheating pan of constant temperature oil, a vacuum electric frying pan and a vacuum air extractor.
本实用新型的技术方案：该设备由三个部分组成，恒温油预热锅、真空电炸锅、真空抽气机。
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