查询词典 dredging

With dredging , the fisherman tows a chain mesh behind a fishing boat in order to scoop up sea life from the seabed.

利用拖捞网，渔人在渔船后面拖动一串筛网，从而从海床捞起海洋生物。

The use of Fuji apples, and other high-end color in the early, usually in mid-September on the shop reflective film with bagging, to fruit, such as dredging of the supporting technology, the entire production Hongguo, the production tests, the following two methods Pumo Better:① will be reflective film in the shop under a tree-line on both sides, reflective film and the outer edge of vertical crown, tile floors, brick, stone and other压住edge, this method is suitable for close planting dwarf Park.

使用方法富士系等高档苹果在着色初期，一般在9月上中旬开始铺反光膜结合套袋、转果、疏叶等配套技术，生产全红果，经生产试验，以下两种铺膜方法较好：①将反光膜顺行铺在树下两边，反光膜与树冠外缘垂直，平铺地面，用砖、石等压住边缘，此方法适用矮化密植园。

In the end, based on this theory, some useful suggestions are given for efficient dredging. 2. Model of dredge pump and pipeline system.

它主要用于培训疏浚专业的学生和挖泥船的船员掌握先进的疏浚作业方法，以达到高效疏浚的目的。

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。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。