screwed ring 中文意思是什麼
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Horology. case bodies middle for two - piece watch cases with screwed back, round opening, dial resting on dial ring
鐘表業.表背面帶螺紋的安裝在表盤環里的表盤圓孔用兩半式表殼殼體 -
Koyo manufactures and sells nine basic kinds of products such as ring joints, expansion joints, screwed joints, swivel joints, manifolds, etc., and our overall standard product lineup runs to approximately 2, 000 items
產品包括環型接頭，公接頭，母接頭，旋轉接頭，多岐管等品種約2000種標準品，擁有業界最高級的一系列產品。
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