下模

Nthe environmental products group, comprising elgin sweeper company,jeststream of houston, vactor manufacturing inc., guzzler manufacturing inc.and ravo b.v., manufactures and markets worldwide a full range of street and parking lot sweeping, high-performance water-blasting equipment, municipal sewer and catch basin cleaning vehicles, industrial vacuuming and refuse trucks.

联邦信号旗下有四大集团：环境产品集团、安全产品集团、工具集团以及消防产品集团，是生产安全产品、信号和通信设备、消防产品、扫路车、垃圾车、高性能冲洗设备、停车控制设备、碳化超硬切削刀具、精密冲压机和塑胶注模配件等的制造商和全球供应商。

The models have been applied to an investigation on the chatter in a type Mx-4 lathe. An in-depth study has been made on the AR spectrum, the chatter modal damping ratio and the characteristic root of a time-varying system.

文中对时变金属切削过程颤振的AR谱特性、颤振模态的阻尼率、时变系统的特征根这三个方面都进行了深入的研究，指出了时变金属切削过程颤振的特点，提出了颤振状态下的机床切削系统仍然是稳定系统的观点。

The research on microstructure pattern and mechanical properties of the circular ring parts by liquid forging experiment under different specific pressures and casting temperature s were stated.

通过圆环零件的液态模锻成形实验，对在不同比压和浇铸温度条件下，锻件的微观组织形貌和力学性能进行了分析研究。

The research on microstructure pattern and mechanical properties of the circular ring parts by liquid forging experiment under different specific pressure s and casting temperatures were stated.

通过圆环零件的液态模锻成形实验，对在不同比压和浇铸温度条件下，锻件的微观组织形貌和力学性能进行了分析研究。

The research on microstructure pattern and mechanical properties of the circular ring parts by liquid forging experiment under different specific pressures and casting temperatures were stated.

通过圆环零件的液态模锻成形实验，对在不同比压和浇铸温度条件下，锻件的微观组织形貌和力学性能进行了分析研究。

Modal analysis of an acoustic system can determine its natural frequency and show the distribution of the acoustic quantities in space, give the knowledge about the way that the acoustic system responses are affected when changes are made in the excitation sources or in the domain geometry, and provide valuable information for the noise control of closed three-dimension domain.

通过对声学系统的模态分析，可以得到其固有频率以及在此频率下声学量在声场空间上的分布，了解到声源及声场空间几何参数的变化对声学系统的相应的影响，为三维封闭空间的噪声控制提供了依据。

By transforming the nonlinear saturation constraint into the special linear constraint, the problem of solving the feedback controller with saturated actuator is converted to the design of controller with linear constraint. The stochastic stability is ensured by using the intersection of ellipsoid invariant set of different modes existing in the attraction domain of the closed loop system. In this case, solving controllers can be equivalent to a solvability problem of linear matrix inequalities.

通过将非线性饱和约束转化为特殊的线性约束，使具有饱和执行器的控制器求解问题转化为线性约束控制器的求解问题，利用位于闭环系统吸引域内的不同模态下椭圆不变集的交集来保证系统的随机稳定性，此时控制器的求解可等效为线性矩阵不等式的可解性问题。

The presence or absence of this common-mode voltage is used as an indication of cable connection status.

的存在或此共模电压的情况下是作为一种电缆连接状态指示。

And the equation of free vibration, which settle for the displacement compatibility condition is presented.

在两端简支的边界条件下，推导出基于正交异性理论的自由振动特征方程；使用模态分离的方法，推导出位移和变形协调条件的自由振动方程。

The results are consistent with the test data and the dynamic analysis model is proved correct.

应用三维有限单元和导弹实体简化模型对一种战术导弹的结构振动特性进行分析，并运用ANSYS有限元分析程序，计算得到了"自由-固支"条件下，导弹竖立状态的固有模态，取得了与试验和数据基本一致的结果，证明了所建模型的正确性。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。