查询词典 lead

And linking the principle of choosing computer visual inspection system hardware, the paper constructs hardware structure of visual inspection system, and develops measure software of thread geometry parameter and applies all above research results to quantificationally measure geometry parameters such as half angle of thread, coning and pitch of conical joint screw thread of graphite electrode, at last educes influencing expressions of the shelter of lead angle to half angle of thread change, it establishes theory base for error amendment.

论述了微小零件尺寸及形状误差的常用测量方法，提出了将视觉检测技术应用到微小零件尺寸及形状误差的测量中，构建了视觉检测系统的硬件结构，开发了相应的测量软件，应用第三章介绍的各种边缘检测方法对传动用滚子链链板进行了边缘检测对比实验，找出适合的边缘检测方法，并应用上述各章的研究结果对传动用滚子链链板节距以及圆形零件的圆度误差进行了测量。

The Gyro Gunsight Mk I - Pt I 陀螺瞄准镜Mk I -第一部分 The gyro gunsight at last solved the most difficult problem faced by pilots and air gunners, that of finding the correct angle of deflection or 'lead' needed to hit the target when it was moving across the line of fire.

陀螺瞄准镜最终解决了飞行员和空中射手面对的最困难的问题，那就是在目标横越发射线的时候，找到正确的命中目标所需要的前置角度或者提前量。

Working out technology and controlling the quality on supporting roller of belt conveyor;2. Theoretical analysis of deviation prevention for rubber belt by the slotted supporting roller with an angle of lead dip;3. A kind of dumbbell typed entirety supporting roller used for supporting the carrying belt and the wind leaf bucket-dustpan typed accumulated material mopping up device employed in sweeping up the accumulated material in the tail section we.

借鉴消化国外输送机械新技术，创新设计出具有全封闭式结构、拆卸性结构及全程底板耐磨设计特点的带式输送机；用于支承输送带的一种哑铃型整体式托辊，及用于自动清扫尾段积料的风叶畚斗式积料清扫器为其专有技术，这些结构及技术保证了带式输送机整机性能优良，输送量高、带速快，高效节能。

Meanwhile, the concentration of Pb,Zn and other heavy metals is rather high in the oxidation zone and decreasesdownward to levels that are unbelievably low for Pb-Zn mine tailings. Theseobservations suggest that heavy metals should be re-immobilized by secondaryminerals, rather than primary minerals, in the oxidation zone, and could be leachedout from suboxic environment due to low rate oxidative dissolution which preventsthe precipitation of secondary minerals in significant amount. Thus, cover scenarioswhich establish a suboxic environment beneath the cover layer might not always beeffective in preventing heavy metal release from mine tailings.Sequential extraction studies indicate that, in addition to heavy metal leaching,oxidation of the mine tailings increased the mobility of residual Zn, and Cu, while Pb remains immobile due to the formation of anglesite (PbSO4). Using the seven-step extraction technique developed by Dold (J. Geochem. Explor., 2003, 80: 55-68), galena dissolves in significant amount at step 2 most probably due to the strong complexing of Pb2+ by acetate, while other metal sulfides dissolve at step 6, which suggest that this extraction technique could not be used to evaluate the mobility of lead in natural environment

重金属含量均低于新鲜尾矿，但以硬化层中的含量最高(Pb、Zn含量分别为0.47%和0.93%)，往下大幅度降低，表明尾矿风化过程中形成的次生矿物对Pb、Zn等重金属元素有较强的固定作用，而次氧化带的淋溶作用造成了金属元素的大量流失；(4)与新鲜尾矿相比，硬化层中铅的可迁移性大大降低，硬化层之下尾矿样品中铅的可迁移性也不同程度降低，这是由于硫化物氧化产生的硫酸根与尾矿中的铅反应形成铅矾(PbSO_4)的缘故；(5)氧化作用使尾矿中的zn、Cu等重金属的可迁移性不同程度地增大，其中对锌的可迁移性影响最大，铜的可迁移性与铁比较相似，铅则容易与硫化物氧化形成的SO_4~(2-)反应形成铅矾(PbSO_4)；(6)为了减少尾矿污染和修复矿山环境，人们提出了各种不同的尾矿覆盖方案，本文的研究结果表明，这些方法不一定能够有效地阻滞污染元素的迁移。

However, our policy of giving excessive favour to English has already caused unbalance s to Bilingual Policy, and lead to the rapid Anglicization of our young.

然而，我国过度偏向英语的政策，已经使双语政策失衡，并且导致了年青一代迅速的英语化。

Angola lead the way, our team is our people!

安哥拉引领着前进，我们的球队是我们的人民！

It is still needed to do some work to determine the deformation parameter β2 for light odd-odd nucleus, like 6Li and to calculate all reaction channels by means of CDCC code simultaneously. It is important to measure the exclusive angular distributions of breakup fragments.In theory, the coupling channel equations have been deduced from one-dimensional to multi-dimensional barrier tunneling. The couplings between the entrance channel and the other channels have appreciable effects on sub-barrier fusion cross section. Instead of single fusion barrier,these couplings lead to a distribution of fusion barrier Dfus.

描述了已有理论，从简单的一维势垒穿透模型出发，引入多维势垒穿透和耦合道模型，证明入射道相对运动与碰撞核各种自由度的耦合导致熔合势垒的劈裂，较低的势垒有利于垒下熔合截面增强；给出了从熔合激发函数抽取势垒分布及从背角准弹激发函数抽取势垒分布的理论依据，以及它们的优缺点。

The angular velocity of the line of sight and the lead speed of the missile.

找出了引起不对称现象的两个主要原因——视线旋转角速度和导弹的前置速度。

A rotor structure for a rotating wing aircraft having substantially rigid rotor head means and rotor blades or wing means arranged in at least one pair, comprising blade angle bearing means (10, 12, 14, 16) for each rotor blade means, tension bar means (6,8) operatively interconnecting the rotor blade means of a pair which blade means are arranged diametrically opposite each other, said tension bar means having a high bending resistance, whereby transmission of bending moments from the rotor blades to the rotor head means is substantially prevented, each of said blade angle bearing means comprising a structure angularly movable in the wing flap direction and in the wing lead-lag direction, at least one of said blade angle bearing means of a pair comprising means permitting an axial motion of the respective tension bar means supported in said blade angle bearing means, and wherein said blade angle bearing means (10, 12, 14, 16) operatively support said tension bar means (6, 8) on said rotor head means (4) for pitch angle rotation of said tension bar means relative to said rotor head means (4), said rotor structure further comprising means (24) securing said rotor blade means (18) to said tension bar means (6, 8) in a manner rigid against rotation of the blade means about the longitudinal blade axis whereby the securing means prevent flapping, drag and lagging movements of the tension bar means, said tension bar means being constructed as torsion bars which are elastic relative to torsion about said longitudinal blade axis.

1转子结构为旋转翼飞机，有大幅刚性转子头部的手段和转子叶片或机翼的手段安排中至少有一对，组成的叶片角度轴承手段（ 10 ， 12 ， 14 ， 16 ）为每个转子叶片的手段，拉杆手段（ 6，8 ）手术互连转子叶片的手段，其中一对刀片的手段都是安排截然相反的对方说，拉杆手段，有一个高弯曲阻力，即传输弯矩从转子叶片向转子头的意思是，大幅防患于未然，每个叶片角度说，轴承的手段组成的一个结构angularly动产在机翼上皮瓣的方向和在机翼导致滞后的方向，至少有一个叶片角度说，轴承是指一对组成的手段，允许轴向的议案，分别紧张酒吧手段，支持在叶片角度说，轴承的手段，其中，叶片角度说，轴承的手段（ 10 ， 12 ， 14 ， 16 ）手术的支持表示拉杆的手段（ 6 ， 8 ）就表示，转子头部的手段（ 4 ）为俯仰角轮换说拉杆手段相对说，转子头部的手段（ 4 ）表示，转子结构进一步组成的手段，（ 24 ）说，确保转子叶片的手段（ 18 ）表示，拉杆手段（ 6 ， 8 ）在一个僵化的方式对旋转的叶片即是说，约纵向叶片轴，即确保手段防止扑，拖曳和落后变动的紧张局势，酒吧的手段，说拉杆手段，正在建造的，作为扭杆这是弹性相对扭转约说，纵向叶片轴。

Germany Medicine Law regulates: herb finished product must have the same quality, safety and standard of curative effect. The guide line of heavy metals, remain of pesticide and animalcule are determined in the import material. Chinese Traditional Medicine preparation belongs to the health foodstuffs in America and the harmful elements, such as mercury, arsenic, lead, and cadmium, are controlled severely. The status of Chinese Traditional Medicine is established in Japan, Korea and Singapore, and so on, but the import herbs must be determined.

德国药品法规定：草药成品药物必须符合与其它成品药物相同的质量、安全和疗效标准，进口原料药材需要检测重金属、农残、微生物等指标；中药制剂在美国被列为健康食品范畴，对有害元素砷、汞、铅、镉严格控制；日本、韩国、新加坡等亚洲国家，虽确定了中药的药品地位，但进口药材时法律要求进行等同于欧洲的有关重金属、农残、微生物等指标的法检。

The role of the environment is very important.

的作用，环境是非常重要的。

At that time, the High Court of England and Wales Court of Queen's Bench president of William Murray, Lord Mansfield in June 22, 1772 ruling:"No matter then there is the inconvenience, but there must be a decision, I can not say that this case under the law in England are permitted or authorized; are so black should be released."

当时的英格兰及威尔士高等法院王座法庭院长William Murray， Lord Mansfield于1772年6月22日宣判：「无论有那麽不便，但总要有个决定，我不能说这件案在英格兰法律之下是准许或认可；所以黑人是应该被释放。