dragline

简明释义

英[ˈdræɡlaɪn]美[ˈdræˌɡlaɪn]

n. 牵引绳索；[机] 拉铲挖土机；绳斗电铲

英英释义

单词用法

同义词

反义词

例句

1.Objective To clone and express the hexamer of the gene of spider dragline silk protein, as a foundation of further research on the functions of the dragline silk protein gene of different lengths.

目的克隆与原核表达“牵引丝蛋白基因”单体六聚物，为开展具有不同长度系列的“牵引丝蛋白基因”单体多聚物的功能研究奠定基础。

2.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。

3.Characterised by its strength and elasticity, dragline silk is six times stronger than nylon and steel fibre of the same diameter, the paper said.

报道说，这种蜘蛛丝的强度和弹性非常高，在同样的直径下，蜘蛛丝的强度是尼龙丝和钢纤维的6倍。

4.A new study reveals that dragline silk, the stuff spiders use to rappel, has a molecular structure that makes it resilient to twisting.

悬在丝上的蜘蛛身体为什么不容易晃动？法国研究人员发现，原来蜘蛛丝中含有一种特殊的分子结构，能使蛛丝富有弹性，很容易克服摆动。

5.The company provides state of the art fabricated dragline buckets, drag chains, rigging, dippers, excavator buckets, hydraulic face shovel buckets and truck bodies.

性能优越的拉斗铲，索具，电铲，挖掘机铲斗，液压挖斗和卡车车斗。

6.Objective To clone and express the hexamer of the gene of spider dragline silk protein, as a foundation of further research on the functions of the dragline silk protein gene of different lengths.

目的克隆与原核表达“牵引丝蛋白基因”单体六聚物，为开展具有不同长度系列的“牵引丝蛋白基因”单体多聚物的功能研究奠定基础。

7.Araneus Ventrous spiders abroad distribute to everywhere in China. Some properties of three kinds of the spider silk fibers were studied which were dragline, framework and egg-case silks.

因此，要使蜘蛛丝的力学性能在人造生体高分子纤维上得到表达，研究其性能的结构机理和形成这种结构的方法原理是至关要的。

8.The construction team used a large dragline to excavate the foundation for the new building.

建筑团队使用了一台大型挖掘机来挖掘新建筑的基础。

9.In mining operations, a dragline is essential for removing overburden material.

在采矿作业中，挖掘机对于去除覆盖物质至关重要。

10.The operator skillfully maneuvered the dragline to scoop up the earth.

操作员熟练地操控着挖掘机来铲起土壤。

11.During the environmental cleanup, a dragline was employed to remove debris from the river.

在环境清理过程中，使用了挖掘机来清除河道中的碎片。

12.The dragline can reach depths that other excavators cannot.

这台挖掘机可以达到其他挖掘机无法触及的深度。

作文

In the world of heavy machinery and construction, the term dragline refers to a type of excavator that is primarily used for digging and moving large amounts of earth. The dragline is equipped with a long boom and a bucket that is suspended from a cable, allowing it to reach far and dig deep into the ground. This unique design makes the dragline an essential tool in various industries, including mining, dredging, and large-scale construction projects. The operation of a dragline is quite fascinating. It uses a series of pulleys and cables to control the movement of the bucket. The operator can maneuver the bucket to scoop up soil or rock, and then drag it towards the machine, hence the name dragline. This method of excavation is particularly effective for removing overburden in mining operations, where large quantities of earth must be displaced to access valuable minerals beneath the surface. One of the most significant advantages of using a dragline is its ability to operate in challenging terrains. Unlike traditional bulldozers or backhoes, which may struggle in soft or unstable ground, the dragline can efficiently work in such conditions due to its balanced weight distribution and extended reach. This capability allows construction and mining companies to expand their operations into areas that would otherwise be deemed inaccessible. Moreover, the size of draglines can vary significantly. Some are small enough to be used on residential construction sites, while others are massive machines that can weigh several hundred tons and are used for large-scale mining operations. For example, the largest dragline ever built is the Bucyrus-Erie 2570WS, which has a bucket capacity of 170 cubic yards and can excavate at depths of over 200 feet. Such machines revolutionize the way we approach excavation and earth-moving tasks, making them faster and more efficient. However, operating a dragline is not without its challenges. Due to their size and complexity, these machines require skilled operators who are trained to handle the nuances of the equipment. Safety is also a primary concern, as the operation of a dragline involves significant risks, including the potential for accidents if proper protocols are not followed. Companies invest heavily in training programs to ensure that their operators are well-prepared to manage these powerful machines safely. In conclusion, the dragline is a remarkable piece of engineering that plays a crucial role in the construction and mining industries. Its unique design and capabilities allow it to perform tasks that are often impossible for other types of machinery. As technology continues to advance, we can expect to see even more innovations in dragline design and functionality, further enhancing their efficiency and safety in various applications. Understanding the importance of the dragline not only highlights its value in modern construction but also showcases the incredible advancements in engineering that make such machines possible.

在重型机械和建筑的世界中，术语dragline指的是一种主要用于挖掘和移动大量土壤的挖掘机。dragline配备有长臂和悬挂在电缆上的铲斗，使其能够深入地下进行挖掘。这种独特的设计使得dragline成为多个行业的重要工具，包括采矿、疏浚和大规模建筑项目。 dragline的操作非常引人入胜。它使用一系列滑轮和电缆来控制铲斗的运动。操作员可以操纵铲斗来铲起土壤或岩石，然后将其拖向机器，因此得名dragline。这种挖掘方法在采矿作业中尤其有效，因为需要移除大量土壤以访问地下的宝贵矿物。 使用dragline的一个显著优势是其在挑战性地形中的操作能力。与传统的推土机或挖掘机相比，后者在软或不稳定的地面上可能会遇到困难，而dragline由于其平衡的重量分布和延伸的工作范围，可以高效地在这种条件下工作。这种能力使得建筑和采矿公司能够将其业务扩展到否则被认为无法进入的区域。 此外，dragline的尺寸可以有很大的变化。有些小到可以用于住宅施工现场，而另一些则是重达数百吨的巨型机器，用于大规模的采矿作业。例如，迄今为止最大的dragline是Bucyrus-Erie 2570WS，其铲斗容量为170立方码，能够在超过200英尺的深度进行挖掘。这些机器彻底改变了我们处理挖掘和土方工程的方式，使其更快、更高效。 然而，操作dragline并非没有挑战。由于其尺寸和复杂性，这些机器需要经过培训的熟练操作员来处理设备的微妙之处。安全也是主要关注点，因为操作dragline涉及重大风险，如果不遵循适当的程序，可能会发生事故。公司在培训项目上投入大量资金，以确保其操作员能够安全地管理这些强大的机器。 总之，dragline是一种卓越的工程机械，在建筑和采矿行业中发挥着关键作用。其独特的设计和能力使其能够执行其他类型的机械常常无法完成的任务。随着技术的不断进步，我们可以期待在dragline的设计和功能方面看到更多的创新，进一步提高其在各种应用中的效率和安全性。理解dragline的重要性不仅突显了其在现代建筑中的价值，也展示了使这种机器成为可能的工程领域的巨大进步。