用点变换理论分析气镐的动力过程，讨论气镐正常起动和稳定工作的条件。

The dynamic process of pneumatic pick and the conditions under which the normal starting and stable working are available are discussed by way of the theory of point transformation.

youdao

用点变换理论分析气镐的动力过程，讨论气镐正常起动和稳定工作的条件。

The dynamic process of pneumatic pick and the conditions under which the normal starting and stable working are available are discussed by way of the theory of point transformation.

youdao