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Its 60-degree cylinder block and cylinder heads are cast aluminum to help reduce mass.

它的60度的缸体和缸盖的铸造铝合金，以帮助降低质量。

This should be expected in view of the much greater mass contained in the cylinder.

鉴于圆柱体包含的质量大得多，这是在意料之中的。

We applied the theory of interacting continua in dynamics of composi-te materials to study the problem of cylindrical wave propagation in laye-red rock mass.

近些年来，随着复合材料生产的发展，复合材料力学性质的理论和实验研究也相应地发展起来了。

The design method of fractional Controller for angle stability loop and mass center control loop of GREP was studied.The fractional PI~λD~μController and integral PID Controller were designed respectively for some type GREP.The simulation results show that the fractional PI~λD~μController designed by this method has its own features compared with PID Controller.

研究了滑翔增程炮弹角稳定回路和高度控制回路的分数阶控制器设计方法，并对某滑翔增程炮弹算例分别进行了分数阶控制器和整数阶PID控制器设计，仿真结果表明该设计方法设计的分数阶控制器较PID控制器有其自身的特点。

The governing equation of in-plane vibration of cable-restraint system is derived by means of D'Alembert principle, and then those partial differential equations are transformed into a set of ordinary differential equations by Garlerkin method. The method of Runge-Kutta integration is applied to solve the equation. The simulation analysis is made to prove that this vibration control has obvious damping effects and then the influence of cable tension, support mass, natural frequency and spring stiffness on the damping are discussed. Eventually, the approximate analytic solution of the optimum damping parameter is obtained to provide a simple and effective reference and design method for the engineers.

通过D'Alembert原理建立拉索－弹性约束系统振动方程，通过Galerkin方法将偏微分方程转化为常微分方程，应用龙格－库塔积分法求解方程；经过仿真分析，验证了该振动控制具有明显的减振效果，并且讨论了初始拉力、支座质量、振动频率及弹簧刚度对减振效果的影响；最后给出了计算最优阻尼参数的近似解析式，为工程师提供了简便有效的参考依据及设计方法。

The two-degree-freedom vibration system made of the main mass and dynamic vibration absorber in deep sea was studied. The mathematics model was built based on the principle of D'Alembert theory, and was calculated with non-dimensional equations.

以深海中附有动力吸振器的两自由度振动系统为研究对象，利用达朗伯原理建立了数学模型，并进行无量纲化运算。

Hydrodynamic forces in potential flow, D'Alembert's paradox, added-mass.

势流中作用在运动物体上的流体动力，达朗伯特详谬，附加质量。

The hating-water treatment of expanded perlite and the waterproof measure of products surfaces are designed according to the ply resonance sound absorbing principle. The technical process of the material preparation include mixture, watering and fiber disperse. Through this research, the practical producing parameters are selected, and long dado product line is designed for mass production.

按照薄膜共振吸声原理设计了膨胀珍珠岩的憎水化处理和对制品表面的防水处理措施；通过对搅拌、加水、纤维分散等材料制备工艺过程的研究，确定实际生产技术参数，并为大规模生产设计了长线台座生产线。

There is nothing dainty and picky about the giant mass of stirred up leaves and sauce, so if you are starving go the Caesar's Salad for the entree and something even larger for main course.

凯撒沙拉通常量多内容杂，可里面除了菜叶和沙司又没什么特别的美味。所以即使你饿的都拿凯撒沙拉当头盘了，也不会妨碍你主菜吃得更多。

Express the differences of displacement variation of a mass subjected by a free damped vibration and a forced vibration, separately.

分别叙述一质量受到无阻尼的振动与强制振动时位移变化的不同。

No complex distressful things on your mind but only our love and care for each other.

无复杂痛苦的事情，对你的心，但只有我们的爱和照顾对方。

At first light, on his own initiative, Vick located the enemy emplacements andfired on them, using 15 rounds.

破晓时分，维克主动地去查找敌军的炮位并向它们开火，打了15发弹药。