幸鑫攘攀夔1.排球比赛中,二传手传过来的球,主攻手在同一位置用大小不变的力来扣球而球的落点、远近和旋转性各不一样,这说明力的果不一样.和不同所产生的效 2.各种农用拖拉机配的犁刀形状略有不同,但共同之处为前端是尖的,这样在耕地时就可以增大犁刀对泥土的_;驾驶人员很注重 In the volleyball game, the ball passing by the setter, the main attacker smash the ball in the same position with the same size and the ball’s placement, distance, and rotation are different. The fruit is not the same. Different from the effect produced. 2. The shape of the coulters used by various agricultural tractors is slightly different, but the common point is that the front end is pointed, so that when the arable land can increase the coulter to the soil _ The driver is very focused