For controlling the surrounding rocks in deep roadway,the basic technology and the controlling process include: 1) The stress transfer to reduce the shallow rock stress of roadway;2) Th.
提出了深部巷道围岩控制的基本技术和控制过程:1)应力转移降低巷道浅部围岩应力;2)采用高预紧力、大延伸量的高强度锚杆、锚索支护系统,强化锚固区围岩强度,提高巷道围岩自身稳定性;3)加强巷道两帮、底角支护,提高巷道最薄弱部位(两帮、底角)残余强度、提高巷道围岩的整体稳定性;4)应用高水速凝材料注浆加固破碎区,提高破碎围岩的完整性和力学参数。
A method which use self-organized extent parameter α to express stress transfer among units and stress concentration in local units is put forward.
为了研究这种临界问题,提出了一种利用自组织程度参数α刻画单元之间的应力转移和局部单元上的应力集中的方法,并以单元的破坏强度服从二次Weibull分布为基础,运用重整化群理论建立了计算力学模型,推导了岩石破坏的临界破坏概率pc。
The "discount adhesion coefficient"which is taken to describe the driving force on the driving wheels is proposed,and the conditions of the automobiles with driving steering wheels for good steering capability are analysed as the automobiles are travelling or applying the brakes on smooth and direct or curved road.
本文在提出用"折合附着系数"描述驱动轮上驱动力大小概念的基础上,分析了驱动式转向轮汽车在平直、弯道上行驶、制动时前轮保持良好转向能力的条件,并提出了保持驱动式转向轮汽车前轮良好转向能力的措施。
impart spin to a cricket ball
使板球增加旋转力.
pressure converter
压力变换器压力转换器
Cam: A device for converting circular or rotary motion into reciprocating motion.
凸轮:把旋转动力转为往复力的机件。
Torque is a measure of the ability of an applied force to produce a twist.
力矩是作用力产生扭转能力的量度。
Transformation of Rural Power Structure: Impetus and Resistance;
农村权力结构的民主转型:动力与阻力
The moment of a force;the measure of a force's tendency to produce torsion and rotation about an axis, equal to the vector product of the radius vector from the axis of rotation to the point of application of the force.
转矩，力矩一种测量产生扭转和绕轴旋转趋势的力的单位，等于从旋转轴到力作用点的旋转矢量
To twist or turn suddenly and forcibly.
扭转猛然而有力地扭或转动
Rotate the engine to check for rotational resistance.
旋转引擎以检查转动阻力。
rotational moment of steering gear
转向器空载转动力矩特性
MANEUVERABILITY. Short turning radius, power steering.
灵活性：较小的转弯半径，动力转向。
Research on the Dynamical Characteristics of Counter-rotating Dual-rotor System;
反向旋转双转子系统动力学特性研究
Rural Labor Transfer During Social Transformation;
转型时期农村劳动力转移的对策研究
Measuring the Torgue and Rotational Speed of Power Machinery and Recovering Energy;
动力机械的转矩转速测试及能量回收
Analysis of On-center Steering Perception of EPS
电动助力转向中间位置转向感觉分析
moment due to elevator deflection
偏转升降舵产生的力矩
integral hydraulic power steering gear
整体式液压助力转向器
limited-rotation hydraulic actuator
有限转动液力促动器
nonrotational hydraulic jar
非旋转式水力振击器