This wire has a plastic casing.
这种电线外包塑料.
《简明英汉词典》
In the past, the white plastic casing of the notebook computer is a selling point.
以前, 白色塑料外壳的笔记本电脑是卖点.
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A kind of ringed core pulling mechanism of injection die of plastic casing coupling is introduced.
介绍了塑料管套注射模的环形型芯抽芯机构.
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