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Haimen-wan bridge lock is situated on the mouth of the sea in Caoyang city of Guangdong province. It is a hydraulic engineerin g with many uses.

海门湾桥闸位于广东省潮阳市出海口，是一个综合性的水利工程。

A case study was conducted of the section of the Ancient Great Canal between Jingkou Lock and Yingjiang Bridge in Zhenjiang. Following the multi-natural-river conception, an integrative assessment index system was established, reflecting characteristics, functions and socio-environmental effects of river ecosystems.

以镇江古运河京口闸－迎江桥段生态河道建设为例，以多自然河道理念为指导，建立反映河道生态系统特征、生态系统功能、社会环境效应的综合评价指标体系。

In recent years, with the increasing of freight traffic and the number of ship in work, actual through capacity of the Grand Canal lock has nearly reached or exceeded designed capacity that results in serious ship delay in ship lock. The research on how to improve the throughput and ensure the fairness has some practical value.

近年来，随着货运量和营运船舶数量的不断增加，京杭运河船闸的实际通过能力已经接近或超过设计通过能力，船闸待闸现象愈来愈严重，严重的影响了京杭运河经济效益的发挥和沿线工农业发展的需要，也降低了水运企业的经济效益和水运在综合运输体系中的竞争力。

Compared to the semiconductor NCs, metallic NCs as floating gates possesses several advantages, such as larger change of electric capacity, stronger coupling with the conduction channel, a wide range of available work functions, higher density of states around the Fermi level, and a smaller energy perturbation due to carrier confinement.

比较半导体奈米晶体和金属奈米晶体两者，金属奈米晶体作为浮动闸极有许多优点：对於电容特性改变量、较多种可供利用并设计的功函数、在费米能阶周围有高的状态密度以及不易受载子局限效应所引起能阶扰动等等。

He told me that his mother had a car with the brake in the center.....a nissan sentra.

他说他妈妈有辆车，车闸是在中间的，是一辆Nissan车。

An overhanging part, the apron of the carriage, may be engaged with the feed rod to give continuous feed motion, or with a lead screw for cutting of threads.

一个伸出的部分，支架的围裙，也许以饲料标尺给连续的合闸动作，或者与螺纹切口的丝杠衔接。

But the thyristor cascade speed regulating method has a lower system power factor.

但是晶闸管串级调速方法存在一个突出的缺点，就是系统功率因数较低。

Our company produce all kinds of high, medium and pressure series valve, valve, check valve, valve plate, high pressure oil wellhead equipment, slurry pipe sinks, cutting Meeting Series snubbing pipe, casing head and drilling accessories such as petroleum, chemical industry equipment.

公司主要生产经营各类高、中、压系列闸阀、截止阀、止回阀、平板阀门、高压采油井口装置，泥浆管汇、节流压井管汇系列、套管头及钻采配件等石油、化工行业专用设备。

In a normal pipe ram, the two blocks of steel that meet in the center of the wellbore to seal the well have a hole (one-half of the hole on each piece) through which the pipe fits.

在标准的管闸板中，在井眼中间相会，以密封井的两块钢板有一个可以通过钻杆的中孔。

Urban systems generally use a large number of low-pressure valves, and to the development of environment-friendly and energy-sing, that is used in the past low-voltage iron gate valve and gradually turn to environment-friendly plastic sheet valve, balance valve, metal sealed butterfly valve and the transition of the center line butterfly valve seal .

城建系统一般采用大量低压阀门，并且向环保型和节能型发展，即由过去使用的低压铁制闸阀逐步转向环保型的胶板阀、平衡阀、金属密封蝶阀及中线密封蝶阀过渡。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。