The reasons of the formation of defects, split filament and double length fiber during the production of superfine PA staple fiber were analyzed.
在涤纶短纤维加工成形过程中对超、倍长纤维的严格控制是生产技术的关键。
Pa series amplifiers feature 3 kinds of operating states: double-channel, parallel, and bridging. They are selectable according to different situations.
PA系列功放设置三种工作状态：双声道，并联，桥接可以根据不同的场合选用。
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