Cov ntsaws ruaj ruaj ua lub luag haujlwm tseem ceeb hauv ntau qhov kev lag luam, los ntawm kev tsim tsheb mus rau kev lag luam aerospace, tshuaj lom neeg thiab cov khoom siv hluav taws xob, uas txhua tus xav tau kev sib khi zoo thiab txhim khu kev qha. Nyob rau hauv no hais txog, graphite rings, raws li ib tug tseem ceeb sealing khoom, yog maj mam qhia broad applier ...
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