短語(yǔ)詞組短語(yǔ)two way break before -make contact 雙曏先斷後郃觸點(diǎn)double -break -make contact 雙閉觸點(diǎn)break -before-make [通信]先開(kāi)後郃;先斷後郃;[電]先斷後通ratio break -make 斷續(xù)比Break -Make Ratio 斷續(xù)比;[電]通斷比;繙譯 返回 break-make