Each end of this tube should be cut to an exact flush, right Angle.
各管结束本应削减到一个确切的冲洗，直角的一半。
From the professional Angle, it is high end and well planned.
从策展专业角度来说，这是非常有高度和计划性的。
The end is cut at an angle and shaved regularly as it wears out.
底端以角度被切断的和刨光，因为它经常磨损。
To this end we must choose a reasonable entrance placement Angle?
为此就要合理地选用入口安置角？
To this end we must choose a reasonable entrance placement Angle?
为此就要合理地选用入口安置角？
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