它的穿孔直径和穿孔速度所需动力都与土层的各种物理力学参数有密切关系。
The perforation diameter, speed as well as the power supply required are closely related to physical and mechanical properties of soil stratum.
在接近穿孔极限速度的入射速度(V50)范围内，这一机制依赖于复合材料板的厚度和中间层剪切强度。
In the range of incident velocities near to the perforation limit velocity (V50), this mechanism depends on thickness and interlaminar shear strength of composite plate.
文中根据能量守恒原理及侵彻孔径公式，推导了获得圆柱形穿孔的射流直径与速度的关系。
The law conversation of energy and the hole diameter formula of jet perforating are employed to deduce the relationship of diameter and velocity of jet for cylindrical hole of perforation concrete.
研究表明：穿孔板的声阻与孔板厚度、孔径、穿孔数目、声波频率和气流速度等因素有关。
The experimental results show that acoustic resistance of perforated plate is related to plate thickness, aperture diameter, numbers of aperture, acoustic frequency and airflow velocity.
测定了临界穿孔能量及弹道极限速度。
Critical energy of perforation and ballistic limit were measured also.
熔透之后穿孔的速度远远大于熔透之前的。
The perforating speed after fully penetrating is far higher than that of before fully penetrating.
熔透之后穿孔的速度远远大于熔透之前的。
The perforating speed after fully penetrating is far higher than that of before fully penetrating.
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