Of equipment; without a motor and intended for hand operation (“a manual keypunch”; “a manual typewriter”).
对设备而言,指无马达和用手操作的设备(如人工键、人工
)。
Of equipment; without a motor and intended for hand operation (“a manual keypunch”; “a manual typewriter”).
对设备而言,指无马达和用手操作的设备(如人工键、人工
)。
The briefing covers quality of the shell pierced by the three-high piercing mill, thespecific rolling failures and countermeasures thereagainst.
简要地介绍了三辊所
毛管的质
及该
特有的轧制故障和预防措施。
Piercing mill is the most important equipment on the rolling pipe line,and the frame is the nucleal component of the piercing mill.
是轧制钢管的重要设备,而
架又是
的核心组成部分。
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