Preferably the chamber is of a cylindrical or tubular design with rounded ends, so as to reduce "hot spots" during operation, and to otherwise most efficiently accommodate the auger.
宁可室对圆形的结束感到圆筒形或者管状设计，如此当做在操作期间减少“政情不稳地区”，而且到另外最有效率地适应螺丝钻。
Preferably the chamber is of a cylindrical or tubular design with rounded ends, so as to reduce "hot spots" during operation, and to otherwise most efficiently accommodate the auger.
宁可室对圆形的结束感到圆筒形或者管状设计，如此当做在操作期间减少“政情不稳地区”，而且到另外最有效率地适应螺丝钻。
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