炉壁间

The manufacture of copper core of automobile radiator includes coating tinned or bared copper cooling pipe; roasting assembled main core inside braze welding furnace at 230-280 deg.c for 30-60 sec; welding main sheet to cooling pipe via conventional process; and welding the copper lid opening for the water chamber with brazing agent without solder and welding filament.

一种铜质汽车散热器主芯的制造方法，其先将镀锡冷却管或裸铜冷却管外壁分别进行覆膜处理。将组装好的主芯主体置于铜钎焊炉内于230～280℃温度焙烧30～60秒。主片与冷却管间采用常规的方法焊合。还可以将组装好的主芯主体每排冷却管上摆放一根外表面涂有无钎料钎剂膜的锡焊丝，它们贴在冷却管与主片结合处。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。