Based on steering dynamics theory of tracked vehicles with dual-power flow transmission,built simulation motion during streering of tracked vehicles under simplified conditions on the hard terrain.
基于双流传动履带车辆转向动力学理论,建立了考虑履带车辆转向过程中滑转和滑移情况下坚实地面上的转向过程仿真模型。
Parameter selection for diamond drilling in hard rocks;
坚硬地层金刚石钻进参数的选择
Study on Impregnated Diamond Bit's Optimal Design for Hard Formation
适合坚硬地层孕镶金刚石钻头优化设计研究
they found a bed of standstone.
这一地层的岩石非常坚硬。
a hard glossy coating.
一种坚硬光滑的涂层。
A large section or block of the earth's crust that is more rigid than the surrounding rock and has been moved or displaced as a unit.
断层地块一大块比周围岩石更坚硬的、曾发生过整块位移的地壳
form a crust or a hard layer.
形成一个硬壳或坚硬的层。
a rigid layer of the lithosphere that is believed to drift slowly.
地球岩石圈中非常坚硬的一层，被认为在缓慢漂移。
A thin, resistant limestone escarpment is present just basinward.
薄层状的坚硬的石灰岩山崖正好位于靠盆地一侧。
Hard strata transmit shock waves more efficiently than loose earth.
质地坚硬的岩层传播震波的效率比松软的土壤高。
These meteors may be exceptionally hard, and they may penetrate far into the atmosphere.
这些流星可能会异常坚硬，因此也许会深深地穿入大气层。
Application of SYZX75 Wire-line Coring Hydro-hammer in Hard Compact "Skid" Formation
SYZX75型绳索取心液动锤在坚硬致密“打滑”地层的应用
The solid part of the earth.
陆界地球的坚硬部分
The sun baked the ground hard.
太阳将地晒得坚硬。
The sun baked ground hard.
太阳把大地晒得坚硬。
incrustations of barnacles on the hull
藤壶附在船身上形成坚硬的外层.
used to form a hard coating on a porous surface.
用在多孔表面形成坚硬的涂层。
a paint that provides a hard glossy transparent coating.
能提供一种坚硬平滑的透明外层的漆。
The theory of plate tectonics describes the motions of the lithosphere, the comparatively rigid outer layer of the Earth that includes all the crust and part of the underlying mantle.
板块结构理论描述岩石圈的运动。 岩石圈是相对坚硬的地球外层，包括全部地壳和部分地幔。
solid, marshy, stony, etc ground
坚硬的土地、 沼泽地、 多石的地.