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Applied for making coiled-coil or trispiral CFL filament, incandescent filament and support.
用于制造双螺旋或三螺旋荧光灯丝、普通白炽灯丝、支架丝等。
youdao
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Applied for making coiled-coil or trispiral CFL filament, incandescent filament and support.
用于制造双螺旋或三螺旋荧光灯丝、普通白炽灯丝、支架丝等。
youdao