A kind of simple manual rolling circularity die was introduced.介绍了一种简易手工卷圆模.The method of equivalency slope circularity approaching was presented for this.本文提出了一种用等斜率圆弧逼近复杂曲线的加工方法.Thrown when a circularity has been detec...
They blitzed the capital with tanks, artillery, anti-aircraft weapons and machine guns.他们动用坦克、大炮、防空武器和机关枪奇袭了首都。Our sniper teams observed them manning an anti-aircraft gun.我们的狙击队观看他们操作高射炮。The anti - aircraft units opened ...