nyg是什麼意思

意思是液壓螺母

例句Coating of cobalt on surface of ultra-fine WC particle to form WC-Co composite powder was carried out by low temperature electroless plating. The WC-Co composite powder was sintered into a new type of ultra-fine WC-Co cemented carbide ( NYG).採用低溫化學鍍方法在超細WC顆粒表面進行金屬鈷包覆，燒結包覆後的複合粉體制備新型硬質合金NYG（WC-3%Co）。