介绍超声波流量计与物位计的声学原理。
The acoustic principle of detecting flowrate and the level of material by ultrasonic is introduced.
实际上，视界已经在河中形成了，并阻止水波流动。
In effect, an event horizon has formed in the river, preventing waves from making their way out.
文章报导了一种新型高精度超声波流量计的系统设计。
This article describes the design of a high precision ultrasonic flowmeter.
超声波流量计在大管径天然气计量中具有突出的优点。
There is obvious advantage of the ultrasonic flow meter for the metering on the large diameter gas pipeline.
能量变化的实质是，风场的时变性引起了波流相互作用。
The cause of the packet energy variation is wave-flow interaction produced by temporal variation of the wind.
论文研究铰接系泊塔-油轮系统波流联合作用下的动力响应。
The paper studied the dynamic response of an ALT-Tanker system exposed to the wave and current.
漂在水面上的软木塞没有随波流走。相反，它随波上下浮动。
A cork floating on water is not swept along with the water. Rather, it moves up and down with the wave motion.
本文研究了波流相互作用情形下波浪对水平流速沿垂向分布的影响。
The effect of wave on vertical distribution of horizontal flow velocity under the interaction of current flow and wave is studied.
文中详细地论述了超声波流量检测原理、系统硬件结构和工作原理。
The principle of liquid nitrogen flow detection, hardware design and operating principle of whole circuit are also described in this paper.
钢管桩嵌固深度和波流要素是决定钢套箱受力状况的两个主要因素。
The embed depth and wave-stream elements of steel pipe piles are two main factors determining the bearing conditions of steel boxed cofferdam.
计算中的底部剪切应力由波流边界层模型给出波—流共同作用下的形式。
In calculation, the bottom shear stress under the effect of waves and currents is supplied by the wave-current bottom boundary layer model.
在平衡电路中，节点处奇次谐波流过差分路径。偶次谐波流过共模路径。
In any balanced circuit, odd harmonics circulate in a differential path, while even harmonics flow in a common-mode path.
研究了复杂可编程逻辑器件(CPLD)在超声波流量测量系统中的应用。
The application of CPLD (complex programmable logic device) in ultrasonic flow measurement system is researched.
在庆典结束时，人们把竹枝丢到河里让它们随波流走，这样会把厄运一起带走。
At the end of the festival, the branches are thrown into a river, thus taking bad luck away.
本文主要概述了U 2000型超声波流量计原理、安装要求及其特点和应用。
The paper is mainly described the design principle. Erect requirement and application of U2000 type ultrasonic flow meter.
通过数值模拟和实验显示的方法对驻定在高速飞行体上斜爆轰波流场进行研究。
The oblique detonation stabilized on a hypervelocity projectile was researched by numerical simulations and experimental visualizations.
论文根据时差法超声波流量计的测量原理，设计了一款超声波流量计专用芯片。
In the thesis, an ASIC for ultrasonic flowmeter is designed based on the principle of time difference.
应用ANSYS软件对波流极值载荷作用下的深水钻井隔水管进行了非线性分析。
Drilling riser in deepwater, which was often acted on by extreme load of wave and current, was analyzed by ANSYS.
本文主要对波流作用下悬浮隧道的响应问题进行了研究，研究内容包括两个部分。
In this dissertation the main study aimed at the interaction of the wave-current effect and the SFT. The contents of the study consist of two parts.
为了计算波流共同作用下含沙量沿垂线的分布，建立了沿垂线分布的泥沙扩散系数模型。
To calculate distribution of sediment concentration in vertical under wave and current, a model of silt diffusion coefficient distribution in vertical is set up.
小管径频差法超声波流量计的测量精度受各种因素的影响，因而获得较高精度比较困难。
The precision of the ultrasonic flowmeter with small tube diameter and frequency difference method is affected by several factors, so to gain more accuracy is difficult.
在冬季的洋流、涌浪以及热带风暴和内波流作用下钻井船有能力保持位置不动是很有必要的。
It is necessary that drilling vessel is capable of standing still under the action of ocean current wave surge tropical storm and internal wave current in winter.
即使当前通常较轻微病症的模式继续下去，第二波流感大流行的影响可随着更多人染病而加剧。
Even if the current pattern of usually mild illness continues, the impact of the pandemic during the second wave could worsen as larger Numbers of people become infected.
并根据宽波束超声波流量计的特点重点进行了自动增益控制放大器和跟踪带通滤波器的设计。
Based on the characteristic of the Wide-beam ultrasonic flowmeter, automatic gain control amplifier and the tracking band-pass filter are devised.
在英国新的流感病例在减少，但是医学家预测随着经年秋季温度下降，将会引发第二波流感。
New swine flu cases are falling in Britain, but medics are predicting a second wave of the virus as temperatures fall in the Autumn.
介绍了超声波流量仪的构成及工作原理与特点，说明该设备是一种有效的明渠流量测试设备。
This paper introduced the composition, operational principle and character of ultrasonic flow instrument and explains that this is an effective flow test instrument for open canal.
根据作者提出的双参数线性化概念，对波流共同作用下倾斜杆件上的波浪拖曳力作了等效线性化。
Based on the double factors linearization concept proposed by authors, the drag force acting on inclined cylinder in wave-current field has been linearized.
根据作者提出的双参数线性化概念，对波流共同作用下倾斜杆件上的波浪拖曳力作了等效线性化。
Based on the double factors linearization concept proposed by authors, the drag force acting on inclined cylinder in wave-current field has been linearized.
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