控制伸出杆成形的机械系统结构简单、紧凑。
The structure of this mechanical system is compact for the space use.
中庭角落的混凝土巨块和双层金属杆件从此就支撑起穹顶和所有从五层楼板边缘延伸出的混凝土平台。
Big concrete blocks and double metal posts in the atrium's corners henceforth support the dome and all the concrete floors that extend around the edges on five levels.
镗刀在镗刀杆上装夹时应尽可能伸出较小的距离，但需要注意切削刃伸出长度应符合加工余量，并有利于排屑。
Boring as far as possible out smaller distances in boring bar clamping, but need to pay attention to the cutting edge length should meet the machining allowance, and is conducive to the chip.
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