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When Zhao Jun gives a place of strategic importance, because be reluctant to leave native land, and close in the edge place borrow by musical instrument express aspirations, the result has flying wild goose to drop from inside sky, fly by all account is because listened to the Le Sheng of Zhao Jun sadness,wild goose and drop fallen (how is saying without the person a extremely frightened person?).

昭君出塞时，因留恋故土，而在边关处借由乐器抒发了心声，结果有飞雁从空中掉落，人人都说飞雁是由于听了昭君悲伤的乐声而掉落下来的（怎么没有人说是惊弓之鸟？）。

This paper mainly deals with the key technologies involved in a guide tracked drop hammer breaker, including the working mechanism of the drop hammer , the design conception and working principle of the hydraulic control system, Indoor tests conducted on the prototype show that main parameters have met the design requirements.

本文重点论述了导轨式落锤碎石机的关键技术─-落锤工作机构及其液控系统的设计思路、工作原理。

The characteristics of pressure drop of wire packing rotating packed bed absorber in air independent propulsion system are analyzed under counter-current condition and the model of pressure drop is built.

对不依赖空气动力装置系统不锈钢波纹丝网填料旋转床吸收器在气液两相逆流条件下的气相压力降特性进行了分析，建立了压力降预报理论模型。

FLUENT-CFD Software is used to simulate the flow and heat transfer in a rectangular passage with the arrays of circle-shaped, similar-drop-shaped, elliptic-shaped and water drop-shaped columns.

运用FLUENTCFD商用软件对装有圆形、准水滴形、椭圆形和水滴形4种扰流柱叉排阵列矩形通道内的流动和换热进行了三维数值模拟，获得了通道内流场、压力场以及局部对流换热系数分布的基本特征，并对扰流柱通道的换热特性和压力损失特性进行了对比分析。

Cervical mucus, semen consistency pilot test of time in the prediction of ovulation election period, a drop of glass on the first and fresh semen, cervical mucus and then take a drop of semen on the next, distance 2,3 mm, not to coverslip pressure to hand light light rock slide, so that two drops of liquid close to each other, under the microscope to observe sperm penetration capacity, such as the sperm can move through the mucus and to continue to run that sperm motility and cervical mucus of the characters are normal, mucus-free anti - sperm antibodies.

宫颈粘液、精液相合试验试验时间选在预测的排卵期，在玻璃片上先放一滴新鲜精液，然后取子宫颈粘液一滴放在精液的旁边，距离2、3mm，不要盖玻片加压，以手轻轻摇动玻片，使两滴液体互相接近，在显微镜下观察精子的穿透能力，如精子能穿过粘液并继续向前运行，表示精子活动力及宫颈粘液的性状都正常，粘液中无抗精子抗体。

The computational fluid dynamics method is used to simulate numerically the two phase flow of gas and liquid in a demister with corrugated baffle. The demisting efficiency and pressure drop under various droplet diameters, gas velocities and plate spacings are provided. The effects of main design parameters on the demisting efficiency and pressure drop are analyzed.

用计算流体力学方法对波纹板除雾器内的气液两相流动进行了数值模拟，计算得到了不同液滴直径、进气速度与叶片间距下除雾器的除雾效率和压降，并分析总结了各参数对除雾效率和压降的影响规律。

The author suggests that, when a drop shaft subsides in normal conditions, not only it bears the earth pressure of the pit but also suffers from the passive soil pressure on the foot blade of the drop shaft.

分析探讨沉井在表土中下沉时所引起的受力现象及其相关的论点，发现沉井在正常下沉过程中，不仅仅会受到竖井表土地压的作用，更主要是沉井的前端受到被动土压力的作

Among them, the Yangtze River Delta region is relatively good performance in other areas, Shanghai, Suzhou, Hangzhou turnover pericyclic than 19 percent drop, respectively, 15%, 27%, but a considerable drop-week year-on-year, respectively, 50%, 49%, 31%.

其中，长三角地区表现相对好于其他地区，上海、苏州、杭州的成交量周环比降幅分别为19%、15%、27%，但周同比降幅相当大，分别为50%、49%、31%。

So the research on the thermo-economics analysis of thermal power plant is significant, this paper focuses on this field and gets some conclusions as follows: Based on Equivalent Enthalpy Drop Method and Cyclical Function Method, a conception, New Heating Steam Flow, is proposed and defined in this paper, which makes it possible to separate the cogeneration circle into condensate steam circle and heating steam circle and to get the new power equation and calculate the Rate of Electrical Power Generation by Heating Steam with Net Equivalent Enthalpy Drop.

在等效热降法的基础上，结合循环函数法的循环分析理论，通过引入热化新蒸汽量的概念，使得常规抽凝供热机组的纯凝汽循环与供热抽汽循环得以分离，从而得出了相应的供热机组汽轮机的功率方程，并实现了热化发电量与净等效热降计算的统一，最终完成了利用等效热降法对供热机组热化发电率的计算，使得已在凝汽机组中应用成熟的等效热降法可以方便地应用于供热机组，进行经济性分析和计算。

On the basis of the dynamic field plant distribution model with the seed drop tube of precision planter the whole moving process of seeds on the seed drop tube was described in this paper.

在精密播种机接输种管后田间植株分布动态模型的基础上，利用随机、统计和精密播种等理论，描述了种子在输种管内运动的全过程。

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。