水下測聲儀 的英文怎麼說
中文拼音 [shuǐxiàcèshēngyí]
水下測聲儀
英文
hydrophone-
Spurt water column not only is a good coupling medium of ultrasonic, but also can get rid of impurity, such as power, vapor and oil film on the surface of the measured object, so this sensor can adapt various environments
因為水柱不僅是超聲波傳播的良好介質，還可將被測物表面的粉塵、水汽、油膜等雜質吹走，使系統具有良好的環境適應能力。在惡劣環境下進行位移測量時，該傳感器具有其他儀器不可比擬的優越性。Sonar is a term that refers both to the application of underwater sound to the detection and location of objects in the sea and to the apparatus used in such application
聲納有雙重意義，一方面指的是運用水面下的聲音來探測並定位海中物體，另方面則是指探測時所用的儀器。The 3d model needs three parameters, among them, the distance from the dam and the distance from the starting point of the section can be measured directly, and the depth of the water corresponding to the distance from the starting point of the section can be measured by the sounding device. however, because the reservoir is very deep, the measuring error of the water depth is greater
而建立其三維模型需要三個參量，其中距壩里程、備斷面起點距可直接測得，而對應于各起點距的水深值因丹江口水庫較深，按通常的方法使用回聲儀測深，即以水下二米處的水溫校正回聲儀的轉速來測深有較大誤差。A three - dimensional - acoustic doppler velocimeter is used to measure the velocity components of the flow field in all three coordinate directions for different discharge and measurement site. the influence of measurement site and the depth / vegetation height ratio on the measured velocity profile and turbulence intensity and the renolds stress is analyzed. the characteristics of the measured velocity distributions and the results of the previous investigators are used to select an analytical expression for the shape of the velocity profile
利用三維超聲波多普勒流速儀（ adv ）量測不同位置、不同流量下的瞬時流場。分析了測點位置和水深與植被高度比對時均流速分佈的影響。本文還給出了種樹段紊動強度及雷諾應力的垂線分佈。The instrument adopts the theory of ultrasonic echo for quickly scanning river bed topography under water and employs the principle of resistance for measuring river bed topography upon water and shallow beach topography, which increases the measuring speed effectively and decreases the disturbing influence on river bed
該儀器採用超聲測量原理實現了水下地形的無接觸快速掃描測量，採用阻抗原理實現了洲灘、邊灘、淺灘的地形測量，有效提高了測量速度，並減小了對河床的擾動影響。The main products include electrical prospecting, seismic, logging, radioactive instruments, geophones and other associated accessories, part of those products are exported to canada, france and japan etc. these products are widely used in the coal and oil industries, engineering exploration, earthquake monitoring and underground water exploration. other products are numeric controlled equipment, telecommunication facitities, parts for cars and motors etc. cgif has been keeping in contact with many colleges and research institutes in china
目前擁有的產品： 「地震勘探儀器及地震傳感器檢波器「 「電法勘探儀器」 「測井勘探儀器」 「放射性勘探儀器」等四個門類各種類型的地專儀器，廣泛應用於地質找礦工程勘探地震監測尋找地下水等相關部門，並出口到日本加拿法國等，得到用戶的信任，取得了可靠的地質成果，為企業贏得了很高的聲譽。分享友人