查询词典 dredging box

255SP centrifugal dredge pump is developed for the long-distance sediment pipeline transportation for the dredging project of Yellow River.

255SP泥泵是为黄河疏浚工程中实现远距离输沙的任务而研制。

The impeller is the key component of a dredge pump. The quality of designing the impeller will directly affect the performance of slurry pump, the efficiency of dredging and the service life of impeller.

叶轮则是疏浚泥泵最关键的零件，其设计质量好坏直接关系到泥泵工作性能的优劣、疏浚效率的高低和使用寿命的长短。

Dredge pump or slurry pump is an application of solid liquid two-phase flow centrifugal pumps and the key equipment of hydraulic dredgers, mainly used in the infrastructure projects such as dredging in rivers and lakes, construction of ports and waterways and so on.

疏浚泥泵是固液两相流泵的一种应用形式，是水力输送式挖泥船的关键设备，主要用于河湖清淤、港口航道建设等基础设施工程中。

The influence of the eccentricity mass moment, position of mass center and the bearing stiffness to the vibration characteristics of the rotor system is discussed in detail; 3. To verify the exactness of FEM and learn the principle of vibration of dredge pump further, The orbit of the rotor shaft of the pump in the dredger is measured, the measurement results show: the repeat of the orbit of the rotor shaft is very bad when dredge pump is in the dredging mud condition.

模态分析确定了泥泵的振动特性；谐响应分析确定了泥泵转子轴在偏心力的作用下轴截面处的最大响应位移；研究了转子轴的质心位置、轴承刚度和质量偏心矩对转子轴振动特性的影响； 3、采用轴心轨迹法，实船测量了泥泵轴工作时振动响应值。

A dredging bucket with hinges like the shell of a clam.

有像蛤壳一样的挖泥的桶。

The mining methods: a full size mine gallery, displays of river dredging by genuine 'bantams' from the Val River in South Africa, mine drilling machines and a unique model of the worlds first sub-sea mining machine NamSSol, showing, at the entrance of the ground floor, how diamonds are extracted from nature

在第一层的入口处展示了钻石矿的开采方法：一个真实大小的矿井坑道，显示了南非瓦尔河的真实的砾岩河底挖掘的情形、矿山钻孔机，以及世界上第一台海底采掘机的模型，展示了钻石是怎样从自然界中提取出来的。

In recent years, although chinas dredging industry has achieved vigorous development, the key equipment such as slurry pumps of large and medium sized hydraulic dredgers are mainly imported from abroad. So it is necessary to study the slurry pump.

尽管近几年来国内疏浚事业有了蓬勃的发展，但目前国内大中型水力式挖泥船的关键设备如泥泵等还依赖于进口或仿制，所以有必要对疏浚泥泵进行研究。

It assembled the world's largest fleet of dredgers, which sucked up 150m cubic meteres of clay and mud and dumped it in deeper waters and piled on top of the layer of stiff clay that the massive dredging had laid bare.

它组成世界上最大的挖泥舰队，吸收150立方米的泥土和软泥堆积到深水里，堆在最上面一层的是硬泥土，大型的挖泥被工作裸露的铺设。

To finally solve the driftier problem of three Gorges Project together with the Gezhouba Project, thread of" dredging being the principal method" must be adopted in settling the drifter problem in the reservoir areas.

三峡枢纽库区漂污治理，应采取&以捞为主&的思路，以根本解决三峡及葛洲坝两大枢纽的漂污问题。

Its production methods are: Dredging mud to folder Bunang Sheng, put the water's fine who clarified to clean water, so slightly dry, into the Yellow Lead (with different pigment additives), group search, such as face, into the mold, remove the dried, carved molding, then rice bran and yellow cow dung and firing into the kiln, then wax dye ink, then the storage of steamed rice vinegar to serve.

其制作方法为：挖河泥以夹布囊盛之，水中摆之的细者，澄去清水，令微干，入黄丹，团搜如面，入模中，取出阴干后，雕琢成型，再以稻糠并黄牛粪和入窑中烧制，而后染墨上蜡，再用其贮米醋蒸之，即成。

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The two-dimensional CDRC-ADI-FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC-ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples.

推导了碰撞非磁化等离子体中的二维CDRC-ADI-FDTD迭代公式，并用算例验证了碰撞非磁化等离子体CDRC-ADI-FDTD算法也是无条件稳定的。