向下的

The selection of N-catch crop and the capacity of nitrate extraction from deep soil layer by catch crop were reviewed in the paper. It also pointed out that combining with N-catch crop in the rotation system had been regarded as a good approach for safe vegetable production.

过量施用的氮肥在自然降水或灌溉水的作用下，可通过径流损失造成地表水水体的富营养化；部分土壤中的NO-3 N可随水向下迁移污染地下水，在地下水环境中仍主要以硝态氮形式

"Always"之类的强调词,如: e.g.4 The Covenantor hereby undertakes to procure that the Customer will comply with all the Customer's obligations to you, the beneficiaries of this deed,but should the Customer default in the payment when due of any payment or default in complying with any other obligation, the Covenantor will, without the need for any demand, make immediate payment or performance thereof as the case may be, at the place, in the funds and currency and/or in the manner required of the Customer and without any withholding or deduction whatsoever PROVIDED ALWAYS HOWEVER that no time for limitation of liability in respect of this Deed shall begin to run in favor of the Covenantor unless and until one or both of you shall have made demand on the Covenantor, and if more than one demand is made, then only from the date and to the extent of each demand respectively.

订约人兹承诺：保证客户将履行其对贵方—即本契约之共同或单独受益人—应尽之所有义务，但是假如客户未支付任何到期的款项或未能履行任何其他义务，订约人将在无需要求的 13 情况下，在客户指定的地点，以所要求的款项及货币形式及/或付款方式，立即做出支付或履行本契约的义务，所付款项不得有任何扣留和减少。但是，除非组成贵方之一公司或两公司已经向订约人提出要求，否则有关本契约之债务时效任何时候都不得按有利于订约人一方的方式开始计算；如果贵方向订约人提出一项以上的要求，则分别按每项要求提出的日期及具体状况开始计算债务时效。 7， any person who"的引导和翻译：，""的引导和翻译：在法律条例中，尤其在各地的刑法典及条例中，"any person who does…shall be guilty of an offence 类句型重复率相当高， person who 用来指称具备一定条件之人， any 并不似 whoever 那样可泛指所有的人，此外，any person who 是个定语从句，后边可以带好几个并行成份的句子而读者读起来不感到吃力，这点也非 whoever 能比，在句法上，该句型有时会把主语和谓语用逗号分开，中间加插一个定语修饰词。

By means of image theory and potential superposition principle,this paper presents the analytic solution of water cresting height and lateral distance from wellbore under steady flow,and optimizes the optimum wellbore placement.

该文利用镜像反映和势的叠加原理，给出底水油藏水平井稳定渗流情况下不同时刻和临界条件下底水脊进高度和水脊面距井轴的侧向距离的解析解，同时结合矿场实例给出实际优化水平井最佳井筒位置，其结果和方法对底水油藏水平井油藏工程设计和理论研究具有一定的指导意义。

They communicate the laity everywhere not only under the form of bread but also under that of wine, and they stubbornly assert that they should communicate even after a meal, or else without the need of a fast, contrary to the church's custom which has been laudably and sensibly approved, from the church's head downwards, but which they damnably try to repudiate as sacrilegious.

他们沟通俗人无处不在，不仅下形成的面包，而且根据酒的，他们顽固地认为他们应沟通后，即使是吃一顿饭，否则，如果没有需要的是一个快速，违背了教会的习俗已laudably理智批准，由教会的头部向下，但它们damnably试图推翻，因为亵渎。

And then the temperature field and configure deformation of the primary and second mirror on the function of temperature gradient of axial, radial and circle direction. The characteristics of the dichroscope with body absorbing and face radiation are stated and the transient temperature field is analysized. The temperature field and configure deformation in different time is known and the influence on visible and middle infrared light is analysized. The advice to thermal control is put forward and the influence of self-radiation of the dichroscope to the detector is analysized.

接下来分析了主次镜在轴向、径向、周向温度梯度作用下的温度场分布及面型变形，阐述了分色镜的体吸收、面发射的特性并建立了分色镜的模型，对分色镜进行了瞬态温度分析，得到了不同时间内分色镜的温度场分布及面型变形，确定了其对可见光和中波红外光的影响，提出了温控的建议并分析了分色镜的自辐射对探测器的影响。

The experimental setup is designed to measure the change of dynamic holdup during the course of non-reflux period and the calculation value is consistent with the experimental results, which indicates that the downflow velocity of dynamic holdup becomes smaller with the decrease of dynamic holdup in the column during the course of non-reflux period.

本文设计了测定无回流过程中动持液量变化的实验装置，在与动态液相交换的全回流间歇精馏串联实验相同的条件下测定了无回流阶段的动持液量变化，模型计算值与实验值比较吻合，结果表明在无回流过程中随着精馏塔中动持液量越来越少，动持液向下流动速度也越来越小。

The floor of the vessel has a cavity (3) therein extending downwardly from the surface of the floor, and the lower end of the liquid reagent level sensor (2) and temperature sensor (1 and 11) are positioned in the cavity.

该器皿的底板具有设在其中并从底板的表面向下延伸的凹穴(3)，并且液体反应物液位传感器(2)和温度传感器(1，11)的下端位于该凹穴内。

The principal of buffer is described as follows.At impulsing down,the piston moves down and vacates the annular space.The pressure in respiratory cavity decreases to a certain level and the traveling valve opens.At that time,the liquids enter into traveling valve and cavity and the plunger is impulsed upward to carry out the gentle transient at the sudden change.When the upward impulsing begins,the respiratory cavity is subjected to pressure and the traveling valve closes.During the gradual pressure rising,the liquids in respiratory cavity effuse from the upper ventage and the sudden change of force-summing direction of plunger is relieved relying on the resistance of ventage.

其原理大致是：下冲程时，活塞向下运动，让出环形空间的体积，呼吸腔内压力下降，下降到一定水平后，游动阀打开，此时，游动阀和小孔同时进液，使柱塞在从上死点处突然改变方向向上运动时得到缓冲，实现了柔和过渡；当上冲程开始时，呼吸腔受压，游动阀关闭，在压力逐渐上升的过程中，呼吸腔内的液体从上部的小孔流出，并依靠小孔的阻力使柱塞受力突然换向得到缓冲。

The insurmountable difficulties of traditional control strategy in isolating vertical vibration and controlling micro-oscillation may be overcome by employing magnetic levitation technique.As a fundamental research of this technology,the governing equitation of rigid uniformity magnetic suspension pole is derived.

采用磁悬浮技术可以解决传统控制方法在竖向隔震、微振控制等方面所面临的难题，作为这项技术应用基础研究，本文建立了磁悬浮均匀等直刚杆的运动方程，讨论了方程的稳定性，给出了随机地面扰动输入下求解非线性振动解的Runge-Kutta格式，并对悬浮刚杆在任意输入下的响应进行了分析。

4 In addition to otherwise provided in this Agreement, if any Party of this agreement violates any obligation under this agreement and thus causes other parties' loss; in the circumstances of difficult to calculating the losses , the party in breach should pay the observant parties 5% of the total goods value which is the RMB exchange rate discount by the Bank of China foreign exchange rate which is the rate of purchase price at the time of goods trading as the liquidated damages.

3.4。除非本协议另有规定，若本协议任何一方违反其在本协议项下的任何义务导致另一方遭受损失，违约方应赔偿守约方的该等损失，在该等损失难以计算的情况下，违约方应当向守约方支付货物标的按成交时中国银行外汇买入价汇率折人民币总货值的5%作为违约金。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。