正向挤压机是普遍采用的设计，因为它易于生产加工、控制使用和维护保养。
The direct extrusion press design is the most popular design because it is simple to produce, operate and maintain.
分析输送带跑偏的原因并从设计、制造、安装、使用和维护保养等方面提出了跑偏的控制方法。
Belt deviation run-out causes are analyzed and the controlling methods are put forward in aspects of design, manufacturing, installing, working and maintenance.
热风幕也是一样的道理，良好的保养和维护可以提高设备的使用。
Hot air curtain is the same reason, good maintenance and maintenance can improve the use of equipment.
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