Of equipment; without a motor and intended for hand operation (“a manual keypunch”; “a manual typewriter”).

对设备,无马达和用手操作的设备(如人工键穿孔机、人工打字机)。

The briefing covers quality of the shell pierced by the three-high piercing mill, thespecific rolling failures and countermeasures thereagainst.

简要地介绍了三辊穿孔机所穿毛管的质及该穿孔机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.

穿孔机是轧制钢管的重要设备,机架又是穿孔机的核部分。

Of equipment; without a motor and intended for hand operation (“a manual keypunch”; “a manual typewriter”).

对设备而言,指无马达和用手的设备(如人工键穿孔机、人工打字机)。

The briefing covers quality of the shell pierced by the three-high piercing mill, thespecific rolling failures and countermeasures thereagainst.

简要地介绍了三辊穿孔机所穿毛管的质及该穿孔机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.

穿孔机轧制钢管的重要设备,而机穿孔机的核心组成部分。

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(如人工键孔机、人工打字机)。

The briefing covers quality of the shell pierced by the three-high piercing mill, thespecific rolling failures and countermeasures thereagainst.

简要地介绍了孔机所毛管的质及该孔机特有的障和预防措施。

Piercing mill is the most important equipment on the rolling pipe line,and the frame is the nucleal component of the piercing mill.

孔机是钢管的重要设备,而机架又是孔机的核心组成部分。

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(如人工键穿孔机、人工打字机)。

The briefing covers quality of the shell pierced by the three-high piercing mill, thespecific rolling failures and countermeasures thereagainst.

简要地介绍了三辊穿孔机所穿毛管的质及该穿孔机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.

穿孔机是轧制钢管的重要设备,而机架又是穿孔机的核心组成部。

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设备(如人工键机、人工打字机)。

The briefing covers quality of the shell pierced by the three-high piercing mill, thespecific rolling failures and countermeasures thereagainst.

简要地介绍了三辊机所质及机特有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.

机是轧制钢重要设备,而机架又是机核心组成部分。

Of equipment; without a motor and intended for hand operation (“a manual keypunch”; “a manual typewriter”).

对备而言,指无马达和用手操作的备(键穿孔机、打字机)。

The briefing covers quality of the shell pierced by the three-high piercing mill, thespecific rolling failures and countermeasures thereagainst.

简地介绍了三辊穿孔机所穿毛管的质及该穿孔机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.

穿孔机是轧制钢管的备,而机架又是穿孔机的核心组成部分。

Of equipment; without a motor and intended for hand operation (“a manual keypunch”; “a manual typewriter”).

对设备而言,指无马达和用手设备(如人工键穿孔、人工打字)。

The briefing covers quality of the shell pierced by the three-high piercing mill, thespecific rolling failures and countermeasures thereagainst.

简要地介绍了三辊穿孔所穿毛管质及该穿孔特有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.

穿孔是轧制钢管重要设备,而是穿孔核心组成部分。

Of equipment; without a motor and intended for hand operation (“a manual keypunch”; “a manual typewriter”).

对言,指无马达和用手操作的(如人工键穿孔机、人工打字机)。

The briefing covers quality of the shell pierced by the three-high piercing mill, thespecific rolling failures and countermeasures thereagainst.

简要地介绍了三辊穿孔机所穿毛管的质及该穿孔机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.

穿孔机是轧制钢管的重要,机架又是穿孔机的核心组。

Of equipment; without a motor and intended for hand operation (“a manual keypunch”; “a manual typewriter”).

对设备而言,指无马手操作的设备(如人工键、人工打字)。

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。