Most metal oxides widely used are semiconductors or insulators, and have good absorbing properties to laser.
常用金属氧化物大多为半导体或绝缘体,对激光有良好的吸收性能。
Measures flow through most metal and plastic pipes including PVC, ductile iron, carbon steel and stainless steel.
流经措施大多数金属和塑料管包括PVC,球墨铸铁,碳素钢和不锈钢。
Most metal and plastic parts are designed to be manufactured, which means they can be clunky and contain material surplus to the part's function but necessary for making it.
大多数金属和塑料是为了生产而设计的,这就意味着它们会很重,并且含有与生产有关,但与其功能无关的剩余物。
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