简要介绍目前国内高大厂房常用采暖方式和存在问题，以及采用下送射流式暖风机的效果。
Briefly introduces Present heating manners and their existent problems in domestic large workshops, as well as the application effectiveness of downward discharge unit heater.
下送布、针送布以及交替压脚上送布再加上超高的压脚冲程保证了良好的送料，以获得完美的缝纫效果。
The bottom feed, needle feed and alternating foot top feed in connection with the high sewing foot stroke ensure an excellent material feed, which is a condition for an impeccable sewing result.
数控机床远程控制主要解决远程计算机在数控加工时对NC程序的上传和下送。
The remote control of NC machine mainly solves how to pass NC programs through remote computer in numerically controlled machining.
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