The paper analysed the process of smashing rock near a explosion source by shock wave and stress wave and the reflecting action of stress wave on the free face.
分析了集中药室爆破时,爆破冲击波和应力波对药室附近岩体的破碎过程及应力波在自由面的反射作用。
Whatever may be postponed for another day - postpone it... Today, spend more time planning, reflecting and preparing for future action.
如果有任何事情可能需要推迟到另一天,那就推迟它。今天,请花更多的时间规划、反映和准备未来的行动。
Speech act is regarded as a social action mainly reflecting social relationships especially "power" and "solidarity" between communicators.
言语行为被看成是一种社会行为,集中反映了交际双方的社会地位和社会关系,尤其是权势“和平等”关系。
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