axis of bore 中文意思是什麼
axis of bore
解釋
炮膛軸線-
If we take out several measuring points along the bore axis and work out the amount of bore wearing, we can consult and calculate the muzzle velocity reduction of the piece by reference of the curve board
沿膛軸方向取若干個測點,當測出各點的炮膛磨損量后,即可從曲線板中查取計算出火炮的初速減退量。
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