small steel ball翻译
small steel ball的基本解释
读音: 美: 英:
小钢珠
例句
Then he fastened a small metallic ball on each end of the steel bar.然后，在细钢棍的两端，各固定一个小的金属球。Small diameter cone bit positioning deflection by wire-line coring with steel ball supporting was used to solve the problem economically.采用绳索取心钢球支撑小径锥面钻头定位偏斜技术对事故进行处理，经济有效。
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