工作条件

Life and job satisfaction was more related to the psychological and physical health.

流动人口的生活和工作的客观条件对心理健康的影响不如生活和工作的主观满意度大。

The generalized jobbery crime refers to the personnel responsible for management functions by its management of the conveniences of crime, Special position crime refers to the national management functions for state functionaries of state organs or personnel who abuse their power or profane duties, undermining the country management function of crime.

广义的职务犯罪，是指负有管理职能的人员利用其管理的便利条件所实施的犯罪；狭义的职务犯罪，是指负有国家管理职能的国家工作人员或国家机关工作人员滥用职权或亵渎职责，破坏国家管理职能的犯罪。

The Journeyman II GTX 6 work boots are the perfect choice for active workers who find themselves in diverse terrain and conditions.

Journeyman II GTX 6工作靴是为那些在不同地形和条件下积极工作的工人提供的最佳选择。

TERRA FORCEThe Journeyman II GTX 6 work boots are the perfect choice for active workers who find themselves in diverse terrain and conditions.

Journeyman II GTX 6 工作靴是在不同地形和条件下积极工作的工人的最佳选择。

This paper analyzes the mechanics characteristics of structure for container vehicle with crane and find out its operating characteristics of hoist mechanism, running area and lateral stability conditions.

对集装箱运输车起重自装卸机构的力学特性进行了分析讨论，得出装卸过程中起重机构的工作特性、工作区域和保证车辆侧向稳定性的条件。

Many long tunnels with bigger diameter used to water diversion are buried under deep strata with complex geology condition. The TBM is the first construction method because of its advantage of the high boring speed. TBM is a type of man-sized machine with high mechanisation and automatization used to boring tunnels, TBM's technique is composite.

本次论文在对TBM 文献资料的积累及本人施工工作经验的基础上，借鉴前人丰厚的研究成果，同时结合目前本人所从事的具体TBM 隧道工程项目，应用所掌握的理论知识，利用项目所配置的施工条件，针对目前TBM 在隧道工程应用中存在的问题做了大量的系统的研究工作，并取得了一定的研究成果。

The other was aimed at developing novel solvent system instead of oleum. A kind of solvent system mixed by phosphotungstic acid and acetic acid was put forward.

在实验室中进行了催化剂的考察工作以及工艺条件的考察工作，对实验结果进行了分析和探讨，讨论了各催化剂的催化循环机理，并建立了相应的动力学模型。

Formulates a school platoon class plan is an item consumes extremely when also the quite laborious work, moreover it also must by have the school row of class work experience or this aspect knowledge talented person can complete.

制定一个学校的排课计划是一项非常耗时且相当辛苦的工作，而且它还得由有学校排课工作经验或者这方面知识的人才能做好在一所高校时一个课程表的制定是一个难题，因为在有关课程表的问题上有很多的限制条件得考虑，还有大量的数据空间被挖掘，即便你的输入数据量并不是实际意义上的大批量

In this topic, the dynamic analysis methods for piezoelectric vibrator are studied systematically based on the theoretical model, FEM numerical experimentation and FEM governing equation for given compound-mode vibrator, and some valuable conclusions are obtained. The main work accomplished is summarized as follows: 1.Elaborate the main modeling methods for piezoelectric vibrator and the significance and necessity to study the dynamic characteristics of piezoelectric vibrator which emphasize the urgency of this paper. 2.Take the bending deformation induced by piezoelectric ceramic as example, the energy transfer mechanism of electric energy to mechanical energy are analyzed; the motion and force transfer mechanism are analyzed for the longitudinal-bending vibrator. 3.Based on mode assumption and Hamilton principle, the coupling model of piezoelectric vibrator of linear USM is built; moreover, the equivalent circuit model is obtained and a coupling equation represents the relation between electric parameters and mechanical parameters is derived which provides foundation to match the vibrator and driving circuit. 4.Combine the constitutive equation of piezoelectric ceramic with elastic-dynamical equation, geometric equation in force field and the Maxwell equation in electric field and the corresponding boundary condition equation, the FEM control equation for piezoelectric vibrator of USM to solve dynamic electro-mechanical coupling field is established by employing the principle of virtual displacement. The equation lays the foundation to study the non-linear constitutive equation of piezoelectric ceramic driven by high-power. 5.Define the dynamic indexes of characteristic of vibrator and carry out variable parameters simulation by calculating the model parameters and the electric characteristics of vibrator are simulated according to the equivalent circuit model. By numerical experimentation, the working mode of vibration of vibrator and the shock excitation results of the working frequency band which provides the mode frequency to realize bimodal are analyzed. Detailed calculation of the electro-mechanical coupling field parameters is made by programming the FEM control equation.

本课题从理论模型、有限元数值试验、有限元控制模型等方面以复合振动模式振子为例对超声电机压电振子的动力学特性及其分析方法进行了全面系统地研究，得出了许多有价值的结论，主要概括如下： 1、阐述了目前针对超声电机压电振子的主要建模方法，对压电振子动态特性的研究意义和必要性进行了论述，突出了本文研究内容的迫切性； 2、以压电陶瓷诱发弹性体发生弯曲变形为例，分析了压电陶瓷通过诱发应变来实现机电能量转换的机理；对基于纵弯模式的压电振子的运动及动力传递机理进行了分析； 3、基于模态假定，利用分析动力学的Hamilton原理，建立了面向直线超声电机压电振子的机电耦合动力学模型，并据此建立了压电振子的等效电路模型，导出了电参量与动力学特性参量的耦合方程，为压电振子与驱动电路的匹配提供了依据； 4、从压电陶瓷的本构方程出发，综合力场的弹性动力学方程、几何方程、电场的麦克斯韦方程以及相应的边界条件方程，采用虚位移原理，建立了压电振子动态问题机电耦合场求解的有限元控制方程，为研究其大功率驱动下的非线性本构模型奠定了基础； 5、界定压电振子的动力学特性指标，对压电振子的机电耦合动力学模型参数进行计算及变参数仿真；依据等效电路模型，对压电振子的电学特性进行了仿真分析；通过有限元数值实验，对压电振子工作模态附近的模态振型及工作频率附近的频段进行了激振效果分析，找出了实现模态简并的激振频率；利用有限元控制方程，通过编程计算，对压电振子的力电耦合场参数进行了详细计算，得出了一些有价值的结论。

The time space regularity of overlying strata movement and damage induced by coal mining was studied using the dynamic mechanics model. The developing regularty of faults and bed separation as well as surface subsidence caused by mining was analyzed based on the geological and mining conditions of working face 5306 in Xinglongzhuang Coal Mine. The data explaination using the model is more reasonable than that using other models. So it can be used in practical mining activities.

采用采动岩体动态力学模型，对采动引起的覆岩移动破坏的时空规律进行了研究，结合兴隆庄矿5306工作面的地质、开采条件，对采动引起的断裂带发育发展规律，岩体内部离层发生发展规律、地表下沉规律等问题进行了分析，并对观测结果作出了较以前的各种理论模型更为符合实际的解释，该模型可在实际工作中得到很好地应用。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。