Previous studies showed that the municipal sewage with low salinity could achieve self-purification by microbial reactions in sewer.
通過(guò)72 h的連續(xù)批量實(shí)驗(yàn),分析高鹽度生活污水在下水道環(huán)境中的主要微生物反應(yīng)以及這些微生物反應(yīng)對(duì)水質(zhì)的影響。
An experimental research was carried out to simulate the operating condition of low,middle and high concentration town sewage treatment by activated sludge system in sewer lines and ditches.
采用下水道活性污泥模擬系統(tǒng)處理低、中、高濃度的城鎮(zhèn)污水,結(jié)果表明:當(dāng)進(jìn)水COD分別為200、400及600 mg/L左右,MLSS為3。
City sewers are responsible for water circulation and recovery in a city.
21世紀(jì)的城市下水道擔(dān)負(fù)著水健康循環(huán)和水環(huán)境恢復(fù)的重任,應(yīng)該成為水資源與營(yíng)養(yǎng)物質(zhì)循環(huán)的紐帶,成為綠色肥料與自然能源的基地。
Based on the detailed introduction of research and application of hyperbaric welding repair technology all over the world, the authors think that it is necessary to develop the hyperbaric underwater pipeline repairing system domestically, and analyze the key points in developing this system.
基于對(duì)水下破損管道維修方法進(jìn)行的系統(tǒng)論述,指出水下干式高壓焊接維修在國(guó)外是一種通用可靠的管道維修技術(shù);基于對(duì)世界范圍內(nèi)水下高壓干式焊接維修技術(shù)的研究與應(yīng)用情況的全面介紹,指出了自主研制我國(guó)高壓干式水下管道系統(tǒng)的必要性,并對(duì)其中的關(guān)鍵問(wèn)題進(jìn)行了論述。
A new technology which firms the underwater pipeline by fiber reinforced mats is put forward.
水下管道所處的自然環(huán)境非常復(fù)雜,水流將對(duì)管道產(chǎn)生各種作用力并且危及管道安全。
The intent of this project is to find a solution of underwater dry maintenance and repairs for underwater pipeline and structures.
“水下管道干式維修系統(tǒng)”是國(guó)家“863”高科技項(xiàng)目,該項(xiàng)目旨在為水下管道和結(jié)構(gòu)的干式維修提供技術(shù)手段。
Service methods and instrumentation for offshore pipelines are different from those on land because of their vastly differing performance and environments.
"水下管道干式維修系統(tǒng)"是國(guó)家"863"高科技項(xiàng)目,旨在為水下油氣管道及管樁結(jié)構(gòu)的干式維修提供技術(shù)手段。
Mechanic behavior of wall soil and liner of underwater tunnel;
水下隧道周?chē)馏w及襯砌變形力學(xué)性狀研究
Research on the Minimum Rock Cover Thickness of Underwater Tunnel in Alternating Layers of Hard and Soft Rocks;
軟硬巖交互地層水下隧道最小巖石覆蓋層厚度研究
Shiziyang tunnel on Guangzhou-Shenzhen-Hong Kong passenger-dedicated railway,which has a design speed of 350km/h,is a milestone in underwater tunnel construction in China.
設(shè)計(jì)時(shí)速達(dá)350 km/h的廣深港客運(yùn)專(zhuān)線(xiàn)獅子洋隧道,在我國(guó)水下隧道建設(shè)史上具有里程碑的意義,如何把握該工程的技術(shù)難點(diǎn),適時(shí)開(kāi)展相關(guān)科研工作,并采取針對(duì)性措施,對(duì)提高工程的建設(shè)質(zhì)量至關(guān)重要,也為今后高水壓、特長(zhǎng)水下隧道的建設(shè)提供借鑒。
In order to launch rocket-assisted torpedo with submarine torpedo tube,the general scheme and trajectory plan of the submarine-launched rocket-assisted torpedo carrier were presented,and the underwater trajectory mode of this torpedo inclining to leave water and yawing to elude submarine was designed.
為了實(shí)現(xiàn)火箭助飛魚(yú)雷采用潛艇魚(yú)雷發(fā)射管發(fā)射,對(duì)火箭助飛魚(yú)雷的水下水平發(fā)射的有關(guān)問(wèn)題進(jìn)行了探索性研究,設(shè)計(jì)了火箭助飛魚(yú)雷運(yùn)載器的總體方案并進(jìn)行了彈道規(guī)劃,提出了火箭助飛魚(yú)雷傾斜出水并偏航避艇的水下彈道運(yùn)動(dòng)方式。
This paper presents a simulation method of a certain air-launched mine′s underwater trajectory based on Matlab/Simulink.
提出了基于MATLAB/S imu link的空投水雷水下彈道仿真方法,分析了特定空投水雷水下運(yùn)動(dòng)時(shí)的受力情況,給出其水下空間運(yùn)動(dòng)彈道的數(shù)學(xué)模型,利用MATLAB軟件強(qiáng)大的求解偏微分方程功能以及其S-function擴(kuò)展能力,完整地構(gòu)建了基于MATLAB/S imu link的空投水雷水下彈道仿真系統(tǒng),并采用此仿真系統(tǒng)對(duì)空投水雷在特定初始條件下的水下彈道進(jìn)行了仿真和分析。
Using the formula, a software for underwater trajectory prediction was programmed.
將無(wú)空泡情況下的阻力系數(shù)估算公式代入自編的水下航行體彈道仿真軟件,計(jì)算得到的超空泡航行體全沾濕狀態(tài)下的水下彈道理論預(yù)報(bào)結(jié)果,與利用模型試驗(yàn)中的實(shí)測(cè)數(shù)據(jù)得到的彈道曲線(xiàn)一致性較好,說(shuō)明數(shù)值模擬對(duì)超空泡航行體阻力系數(shù)的估算基本準(zhǔn)確。
On process design and construction technique of launching way of caisson precasting yard;
沉箱預(yù)制場(chǎng)水下滑道工藝設(shè)計(jì)與施工
The sewers discharge out at sea.
下水道的污水排入海里。
a block in the pipe, gutter, drain, etc
阻塞管道、 排水溝、 下水道等的污物
sewer cleasing sludge
從下水道清出的污泥
gulley emptier/sewage equipment
清溝機(jī)/下水道設(shè)備
The sewer was gorged with rubbish
下水道塞滿(mǎn)了垃圾。
The bathtub drain needs repairing.
浴盆的下水道需要修理。
plunge a rod into a blockeddrain to clear it
用棍通下水道使之暢通.
a drain that was jammed By deBris.
被殘余物阻塞的下水道
Drains and gutters require to be flushed.
下水道和陰溝必須沖洗。
Mud choked the drainpipe.
淤泥堵塞了下水道.
To clear a blockage from(a drain, for example).
從（如下水道）中排除障礙
The pipe connects with the sewer.
這根管子連接下水道。
The place where a sewer, drain, or stream discharges.
出水口陰溝、下水道或河流排水的地方
A small proportion of the streets were sewered.
一小部分街道鋪有下水道。
On upper floors， plugged drains may cause flooding.
樓上堵塞的下水道也許會(huì)引起淹水。
The drain is clogged again and there's water all over the bathroom floor.
下水道又堵了，整個(gè)浴室地面都是水。
We waste the dirty water by channeling it into the sewer.
我們通過(guò)溝槽把臟水排放到下水道中。
unstop a sink, toilet, drain, etc
疏通洗滌槽、 抽水馬桶、 下水道等.