furthermore, the zinc evaporating and oxidizing cause air bubble, incomplete fusion and crack.

1、

c , . incomplete fusion prevent adopting greater welding current, use correctly to weld the cleaning of operating, notice groove position.

未熔合的防止采用较大的焊接电流，正确地进行施焊操作，注意坡口部位的清洁。

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2、

the plc be used in the friction welding machine

PLC在摩擦焊接机床中的应用

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3、

principal axis rotating speed control system of friction welding machine

摩擦焊机主轴转速测控系统

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4、

vibration model and dynamic analysis of linear friction welding machine

线性摩擦焊机振动模型及动力学分析

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5、

comparison of pressure characteristics between two friction welding machine hydraulic systems

摩擦焊机液压施力系统压力特性对比分析

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6、

control system composed of variable frequency adjustable speed single chip processor on linear friction welding machine

线性摩擦焊机的变频调速单片机控制系统

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7、

design of plc control system used in continuous driving-rotation friction welding machine

连续驱动旋转式摩擦焊机改用PLC控制设计

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8、

industry: plasma welding machine; touch welder; spot welder; resistance welding machine; friction welding machine; reflow soldering machine;

所属行业：等离子焊机；碰焊机；点焊机；电阻焊机；摩擦焊机；回流焊接机；；

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9、

industry: plastic welder; friction welding machine; welding machine; riveting equipment; ultrasonic cleaning equipment; washing machine;

所属行业：塑焊机；摩擦焊机；熔接机；铆接设备；超声波清洗设备；清洗机械；；

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10、

analysis of pressure characteristics of electro-hydraulic proportional pressure reduction system of a friction welding machine

摩擦焊机电液比例减压施力系统压力特性分析

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11、

marine debris threatens environmental health in several ways. here are the main ones:

海洋废弃物给环境健康带来多种威胁。以下是一些最主要的问题：

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12、

i did another story on marine debris.

我写了另一个关于海洋废弃物的故事。

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13、

so a lot of people remember the plastic bottle anyway, but we really talked about marine debris and plastic in the course of that one.

所以很多人还是记得这个塑料瓶，但我们真谈论的是海洋废弃物和塑料在那个故事里。

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14、

a tip to avoid the rip current all together is to avoid areas where marine debris is moving outward and the water is darker and choppy .

对于避免潮汐同时也要避免海面上的残渣，这些致使海水变的更黑和急动。

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15、

women's health is also affected by the smoking of others, that is, by passive or involuntary smoking;

女性的健康还因其他人吸烟而受到影响，即所谓的被动吸烟。

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16、

why is involuntary smoking dangerous to a non-smoker?

对一个不抽烟的人来说，抽二手烟很危险，为什么？

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17、

igad; intergovernmental authority on development;

政府间发展管理局

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18、

two - speed reversing gear

双速齿轮逆转装置

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19、

the application of plc in the reversing gear of a double housing planer

PLC在龙门刨换向机构中的应用

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20、

the machine tool adapts all-round reversing gear. it has high precision and is easy to operate.

该机床采用全齿轮传动，精度高，操作方便；

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