鈑金孔 的英文怎麼說
中文拼音 [bǎnjīnkǒng]
鈑金孔
英文
sheet metal hole-
In sheet metal, drawing is a process of forming flat sheet metal into hollow shapes by means of a punch that causes the metal to flow into the die cavity
在鈑金中，制圖的過程，就是將一個平鈑金沖壓成凹狀，通過一個沖孔使金屬流入型腔。
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