Refer to your camera's manual to see how to turn the flash on and off.
请参考你相机的说明书以了解如何开关内闪。
The features of manual downhill welding, semiautomatic welding, automatic welding and other welding technologies like butt flash welding and laser beam welding (LEW) and so on are analyzed.
分析了手工下向焊、半自动焊、自动焊及特种焊等焊接方法的特点，在选择焊接方法时应考虑管道直径、壁厚、管道长度、设计条件、管子级别等因素。
The features of manual downhill welding, semiautomatic welding, automatic welding and other welding technologies like butt flash welding and laser beam welding (LEW) and so on are analyzed.
分析了手工下向焊、半自动焊、自动焊及特种焊等焊接方法的特点，在选择焊接方法时应考虑管道直径、壁厚、管道长度、设计条件、管子级别等因素。
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