The invention relates to a handle fixing device of vacuum dust-collector which has a handle tube whose length is adjustable and it can slide along the machine.
要约一种具有可调整长度的把手导管，并能在机身上引滑动的真空吸尘器把手固定结构。
When scaffold work, the adjustable shelf and the bracket fixing use to attach the wall bolt and the wall anchor, two between not relative motions.
当脚手架工作时，活动架和固定架均用附墙螺栓与墙体锚固，两架之间无相对运动。
Special disk type stations are installed for fixing cylinders. Sizes are adjustable and substrate loading as well as unloading easy.
本机装有专用固定圆筒的工位圆盘，尺寸可调整，工件装卸方便。
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