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进行预热

进行预热

进行预热

进行预热

1

Base metal both sides of welding to be preheating by oxyacetylene Welding & Cutting torches baking method .

采用氧乙炔割炬烘焙方法对焊缝两边母材进行预热。

2

3

Preheating is required if either of these two conditions are not met .

如无法满足两个条件中任意一条，则需要进行预热处理。

4

Before mixing with the products of combustion , the air is preheated .

空气在与燃烧生成物混合之前要进行预热。

5

Before use , you must block of solid plastic preheated forianywhere first melting into the form of liquids.

使用前必须对固体的胶块进行预热，使其可先熔融成液状。

6

Emissions also fall if biomass fuel is used to pre-heat the steam before it enters the boiler.

如果利用生物燃料对即将通入熔炉的蒸汽进行预热，也能够减少污染物的排放。

7

When you use them, first on the solid hot melts for warming up.

使用时，首先要对固体热熔胶进行预热。

8

It can save a lot of energy to preheat air in air-conditioning systems .

在空调系统中对空气进行预热，可以节约大量的能源。

10

the side-seal disks are pre-heated in a heating furnace before use ;

侧封圆盘在使用前在加热炉内进行预热；

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