牵引

One of two side straps or chains connecting a harnessed draft animal to a vehicle or whiffletree.

挽绳将套以挽具的牵引动物与一车辆或横杠连接起来的两条''。

The gas was slowed by a drag force similar to air resistance.

由于类似空气阻力的牵引作用，这些气体的速度减缓。

Furthermore, dragline silk is elastic, which many of the man-made fibers are not.

而且，牵引丝具有弹性，这是许多人造纤维所不具备的。

Cramer went on to inquire about the delay in a dragline order to India.

克莱默先生接着询问延迟牵引，以印度。

At least three spiders produce dragline silk that, if spun into thicker strands, could be as strong as the nylon and carbon fibers used in high-performance aircraft.

至少有三种蜘蛛能产生牵引丝；假如把这些丝结得更粗，它们就会像用于高性能飞机上的尼龙和碳纤维那样牢固。

Researchers at Rothamsted Research redesigned the model to allow for elasticity and flexibility in the spider's dragline , its most sturdy line of silk used for moving about and snagging prey.

罗瑟斯塔研究所的研究人员重新设计了蜘蛛运动模式，让最强韧的用来四处活动和阻挡猎物的牵引丝具有弹性和柔韧性。

They used a process called atomic layer deposition, which not only coated spider dragline silks with metal but also caused some metal ions to penetrate the fibers and react with their protein structure.

他们用到了一种称之为原子级别表面沉积方法。这个方法不但将蜘蛛牵引丝上覆盖了金属，而且会使得一些金属离子渗入纤维和其蛋白质解构起反应。

The mechanical model of force elongation behavior of spider silk was designed on the base of skin core structure after understanding the structural mechanisms of mechanical properties and morphology and shape of the Araneus Ventricosus spider dragline silk.

根据大腹园蛛牵引丝力学性能的结构机理及其聚集态结构和形态结构特征，初步建立了以皮芯层结构为基础的蜘蛛丝拉伸力学模型，分析了皮芯层比例及结构对蜘蛛丝纤维力学性能的影响。

The objective of this thesis is to develop an integrated test and analysis system for tractor drawbar and noise.

本论文的目的在于研制一种集成化的拖拉机牵引和噪声测试分析系统。

Based on this study, an integrated test and analysis system for tractor drawbar and noise is developed.

基于以上研究，研制了集成化的拖拉机牵引和噪声测试分析系统。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。