Prewinch

Prewinch twb xub nkag tau rau hauv lub tebchaws United States nyob rau hauv lub 1940s thiab 1950s. Nws yog Ameslikas tsim raws li ib tug helical tiv thaiv kab rau kev nyuaj siab concentration thiab hluav taws xob corrosion thiab arc hlawv tiv thaiv ntawm liab qab nyob ntawm tej. Tom qab ntau xyoo ntawm kev loj hlob, lub Pre-winch tau lug siv nyob rau hauv kis tau tus mob thiab tis, fiber ntau-optic kev sib txuas lus, electrified railway, cable TV, siv, ua liaj ua teb thiab lwm yam liaj teb.


Post lub sij hawm: Apr-08-2018
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