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這個(gè)比POM的抗扭和抗拉強(qiáng)三倍的到底是啥? 玻璃纖維增強(qiáng)聚酰胺66 (PA66/30% GF) |
謝謝廣而告之 |
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那這種齒輪齒條會(huì)不會(huì)時(shí)間長(zhǎng)了出現(xiàn)老化、脆化的問(wèn)題呢 |
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