lead

一种重而柔软、无弹性的金属元素,具有明亮的蓝色,但易于失去光泽；既可锻又可延展,但韧性较小。易熔,与其他金属形成合金,是焊料和铸字金属的成分。原子序数82,符号Pb(来自拉丁文plumbum)。

A heavy, pliable, inelastic metal element, having a bright, bluish color, but easily tarnished; both malleable and ductile, though with little tenacity. It is easily fusible, forms alloys with other metals, and is an ingredient of solder and type metal. Atomic number 82, symbol Pb (from Latin plumbum).

引导或率领的行为；指引；方向或路线。

The act of leading or conducting; guidance; direction, course

比赛中竞争者的优势

an advantage held by a competitor in a race

附在绳子上的铅锤或铅块,用于测量海洋深度或估算速度(节)。

A plummet or mass of lead attached to a line, used in sounding depth at sea or to estimate velocity in knots.

领先；超前位置；亦指领先的程度；赛跑中处于前方的状态；未完成比赛中的最高分。

Precedence; advance position; also, the measure of precedence; the state of being ahead in a race; the highest score in an incomplete game.

一种柔软、重、毒性强的可锻金属元素；新切割时呈蓝白色,但容易氧化变为暗灰色

a soft heavy toxic malleable metallic element; bluish white when freshly cut but tarnishes readily to dull grey

用于印刷中分隔行的薄型金属条。

A thin strip of type metal, used to separate lines of type in printing.

跑垒员在等待投球时离开垒包的情形。

The situation where a runner steps away from a base while waiting for the pitch to be thrown.

指向可能解决方案的证据

evidence pointing to a possible solution

行前或行间的垂直间距,亦称行距。

Vertical space in advance of a row or between rows of text. Also known as leading.

在游戏或一轮中首先出牌的权利或行为；所出的花色或牌张。

The act or right of playing first in a game or round; the card suit, or piece, so played

用作屋顶覆盖的铅板或铅片。

Sheets or plates of lead used as a covering for roofs.

戏剧或电影中的主角；主要角色。

The main role in a play or film; the lead role.

以铅板或镀锡铁板覆盖的屋顶。

A roof covered with lead sheets or terne plates.

饰演主角的演员；主演。

The actor who plays the main role; lead actor.

铅笔中使用的石墨细芯。

A thin cylinder of graphite used in pencils.

项目或轮班等的负责人。

The person in charge of a project or a work shift etc.

内衬铅的 X 射线防护服。

X-ray protective clothing lined with lead.

冰原中的开阔水道

A channel of open water in an ice field.

矿脉

A lode.

绳索的走向

The course of a rope from end to end.

牵动物用的绳子或皮带；牵绳

A rope, leather strap, or similar device with which to lead an animal; a leash

蒸汽机中阀门开启的宽度

In a steam engine, the width of port opening which is uncovered by the valve, for the admission or release of steam, at the instant when the piston is at end of its stroke.

运输距离

The distance of haul, as from a cutting to an embankment.

齿轮齿推动另一齿或棘爪的动作

The action of a tooth, such as a tooth of a wheel, in impelling another tooth or a pallet.

未被追踪的假设

Hypothesis that has not been pursued

侦探或警察获取的有助于发现案件细节的信息

Information obtained by a detective or police officer that allows him or her to discover further details about a crime or incident.

潜在的销售或交易机会,潜在客户

Potential opportunity for a sale or transaction, a potential customer.

新闻记者获取的有助于发现更多细节的信息

Information obtained by a news reporter about an issue or subject that allows him or her to discover more details.

为队伍投掷前两个石块的选手

The player who throws the first two rocks for a team.

报纸头版或新闻广播开头的重要新闻

An important news story that appears on the front page of a newspaper or at the beginning of a news broadcast

螺纹在一次旋转中移动的轴向距离

The axial distance a screw thread travels in one revolution. It is equal to the pitch times the number of starts.

理发店四重唱中唱旋律的人,通常是第二男高音

In a barbershop quartet, the person who sings the melody, usually the second tenor.

一个声部宣布的主题,由其他声部重复

The announcement by one voice part of a theme to be repeated by the other parts.

一个声部中的标记或短段,作为其他声部进入的提示

A mark or a short passage in one voice part, as of a canon, serving as a cue for the entrance of others.

主要合成音,通常由方波、锯齿波、三角波或正弦波组成

A primary synth, often composed of square, sawtooth, triangle or sine waveforms.

复合发动机中两个连续曲柄之间超过直角的角度

The excess above a right angle in the angle between two consecutive cranks, as of a compound engine, on the same shaft.

直流发电机刷子连接线与极对称直径之间的角度

The angle between the line joining the brushes of a continuous-current dynamo and the diameter symmetrical between the poles.

在交流电路中,电流相位超前于产生它的电动势的现象。

The advance of the current phase in an alternating circuit beyond that of the electromotive force producing it.