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量及该穿孔机特有的轧制故障和预防措施。

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)。

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。

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毛管的质量及该机特有的轧制故障和预防措施。

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

而言,指无马达和用手操作的(如人工机、人工打字机)。

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

机是轧制钢管的重要,而机架又是机的核心组成部分。

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质量及该特有轧制故障和预防措施。

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、人工打字)。

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

是轧制重要设备,而架又是核心组成部分。

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量及该穿孔机特有的轧制故障和预防措施。

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)。

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。

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质量及该穿孔机特有轧制故障预防措施。

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

对设备而言,指无马手设备(如人工键穿孔机、人工打字机)。

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

穿孔机是轧制钢管重要设备,而机架又是穿孔机核心组成部分。

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量及该穿孔机特有的轧制故障和预防措施。

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)。

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。

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

简要地介绍了三辊孔所的质量及该孔特有的轧制故障和预防措施。

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、人工打字)。

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

孔是轧制钢的重要设备,而是孔的核心组成部分。

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

简要地介绍穿孔机所穿毛管质量及该穿孔机特有轧制故障和预防措施。

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(如人工键穿孔机、人工打字机)。

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

穿孔机是轧制钢管重要设备,而机架又是穿孔机组成部分。

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量及该穿孔特有制故障和预防措施。

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(如人工键穿孔、人工打字)。

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

穿孔制钢管重要设备,而架又穿孔核心组成部分。