查询词典 lead

The mechanics model of a ball screw was developed considering the factor of lead angle,and the main curvature of the helical surface was deduced using differential geometry method,and the effect of lead angle on the elastic deformation was analyzed.

考虑螺旋升角的因素，建立了滚珠丝杠副的受力模型，应用微分几何理论推导了螺旋面的主曲率，并进一步分析了螺旋升角对滚珠丝杠副弹性变形的影响。

Lastly, experimentations are carried out on Chaochai 6102BQ engine and the data of the thermal parameters according to different oil-apply lead angle is derived. The influence of the change of oil-apply lead angle on the rate of heat release is researched, then a reference is provided for building an accurate heat release model.

最后，在朝柴6102BQ柴油机台架上进行了试验，对不同供油提前角下柴油机的热工参数进行实机测试，对试验结果进行了处理、分析，研究了供油提前角的改变对放热规律的影响，为建立该故障下的燃烧放热模型提供参考。

In this thesis,based on the DFT+NEGF first-principles method,we construct a lead-molecule-lead sandwich system with single benzene-based molecule to investigate the relationship between the structure and properties of the molecular devices and the factors that influence properties of the molecular devices.Our computational investigations on these molecular devices are primarily concentrated on the effect of contact geometry between molecules and electrodes,the effect of side groups,the effect of different torsion angle between two phenyl rings and the effect of external electric field.This thesis consists of five chapters:In Chapter one,we mainly introduce the research background and development of the molecular electronics,including the experimental fabrication of molecular electronic components and theoretical simulation methods.Afterwards we discuss the questions that need to be solved in this area.Finally,the main contents of this thesis are listed.In Chapter two,we introduce the theoretical methods used in this thesis, including the main first-principles calculation methods,i.e.,the Density-Functionmethod and nonequilibrium Green\'s function.

本论文拟采用密度泛函理论和非平衡格林函数相结合的第一性原理计算方法，选取苯基小分子作为研究对象，构建了金属电极/有机小分子/金属电极三明治结构体系，系统地研究了苯基分子器件结构的改变与分子电输运性质之间的关系以及影响分子器件电输运性质的相关因素，其中重点研究了分子与电极间可能的接触结构改变、官能团、分子间的扭转角以及外电场对苯基分子电输运性质的影响，本论文主要包括以下五个章节的内容：第一章为综述部分，主要介绍了分子电子学产生的背景、分子器件的研究意义、当前研究分子器件的实验和主要理论方法，以及目前在研究分子器件中存在的一些问题，最后给出了本论文的主要研究内容和技术路线。

Lead cathode - I have read about the amount of surface area of lead you need for the size of the parts you will anodize...

铅阴极 -我对铅的表面面积量你的尺寸的部分需要你将阳极处理读。。。

Antimonial lead is preferable to chemical lead because of its greater corrosion resistance and strength.

含锑的铅较化工铅好些，由于它有更好的抗蚀性及强度。

The studies presented here provided the antifungal lead compounds. Because the affinity of the lead molecules for CYP51 was mainly attributed to their nonbonding interaction with the apoprotein, which was different from the azole antifungal agents.

先导分子通过与靶酶活性腔氨基酸残基的非共价键结合产生抗真菌作用，避免与血红素辅基Fe原子发生配位结合，为一类具有新作用机理的非氮唑类抗真菌先导化合物。

"We are extremely grateful to the CAW leadership and to its hardworking members for their openness in this challenging environment to create a new strategy that will lead this company on a path to success," said Al Iacobelli, Chrysler's lead bargainer.

"我们非常感谢啼领导和勤劳成员的公开性这一具有挑战性的环境，以创建一个新的战略，这将导致该公司在通往成功之路说，"基地Iacobelli ，克莱斯勒的导致bargainer 。

At the same time should do the following:(1) education of children washing hands frequently, wash hands properly;(2) ground剪指甲regular cleaning of toys and other children may have been talking about decentralization of the items;(3) near the road to keep the bedroom with wet erase parts of the children could be reached by the dust;(4) education of children and lead less than a road near the factory and play operation;(5) not in streets with heavy traffic, pushing baby carriages stroll;(6) workplace have lead contamination personnel (such as the smelter workers, traffic police, etc.) Do not wear work clothes to go home;(7) with coal as fuel bedroom window to ground ventilation;(8) high lead level for children to eat less food (such as eggs, burglary rice flower);(9) morning, open the tap water released in the first paragraph should not be used to cook food for the children;(10) to strengthen child nutrition, and ensure adequate calcium, iron and zinc intake.

同时应做到下列几点：(1)教育儿童勤洗手，正确洗手；(2)勤剪指甲，经常清洗玩具和其它可能被宝宝放到口边的物品；(3)近马路的居室要经常用湿布擦除孩子能触及部位的灰尘；(4)教育儿童不到马路边和铅作业工厂附近玩耍；(5)不在交通繁忙的街道推着婴儿车散步；(6)工作场所有铅污染的人员(如冶炼厂职工、交通警等)不要将工作服穿回家；(7)以煤为燃料的居室要勤开窗通风；(8)儿童少吃含铅量高的食品；(9)早晨打开自来水龙头放出来的第一段水不能用来为孩子烹食；(10)加强儿童营养，保证有充足的钙、铁及锌的摄人。

The lamps are available with two viewing angles. With an angle of 30 degrees by 70 degrees, the red HLMP-AD31-UX000 and HLMP-AD30-UX000 (with and without lead standoffs, respectively), and amber HLMP-AL30-TW000 and HLMP-AL31-TW000 (with and without lead standoffs) are generally used for long-distance viewing in applications such as traffic signals.With a viewing angle of 40 degrees by 100 degrees, the red HLMP-HD31-SV000 and HLMP-HD30- SV000, and amber HLMP-HL31- RU000 and HLMP-HL30-RU000 (with and without lead standoffs) are ideal for wide-viewing-angle applications such as stadium scoreboards and other message signs.

这一系列LED可提供两种视角：红色HLMP-AD31-UX000和HLMP-AD30-UX000（一个有支架，一个没有支架）及琥珀色HLMP-AL30-TW000和HLMP-AL31-TW000（一个有支架，一个没有支架），可提供30 x 70度视角，通常用于交通信号等长距离应用；红色HLMP-HD31-SV000和HLMP-HD30-SV000及琥珀色HLMP-HL31- RU000和HLMP-HL30-RU000（一个有支架，一个没有支架），可提供40 x 100 度视角，适用于露天大型运动场的记分板和其他信息标志等宽视角应用领域。

The lead-less piezoelectric ceramic composition is prepared through sintering at relatively low temperature, say, 1190 deg.c or even lower, and has good piezoelectric characteristic, practical plane electromechanical coupling coefficient kp, high Curie point and no lead and lead compound contained.

本发明的制备工艺能在较低温度下，如1190℃或更低温度下烧结无铅压电陶瓷组合物，使制备的无铅压电陶瓷具有好的压电性、可实用的平面机电耦合系数kp和高的居里温度，制备工艺过程中不含铅或铅的化合物。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。