preheat词根词缀

preheat

[ˌpri:ˈhi:t]

vt.预热;

过去式： preheated 过去分词： preheated 现在分词：preheating 第三人称单数： preheats

例句:

1、

Park automobile on the flat and level road, and then start engine to preheat engine oil.

将车辆停放在平坦和水平路面上, 然后起动发动机以预热机油.

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2、

Preheat an oven at temperature of 220 ℃. Prepare a baking tray, grease and set aside.

将焗炉炉温预热至220℃. 预备一个烤盆, 扫油.

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3、

ZDH series preheater is mainly used to preheat the PCB before impact cutting.

ZDH系列预热机主要用于印制板在冲切前的预热.

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