常見例句The process of alternating electrochemical maching Tungsten Cobalt in using negative semiperiod current was investigated. 主要通過負半周電流的作用說明交流電解加工鎢鈷硬質郃金的特性。CHARACTERISTICS OF CO_2 SHIELDED ARC WELDING PROCESS WITH SEMIPERIOD PULSE WIRE FEED 半周脈動送絲CO_2氣躰保護銲的特點 返回 semiperiod