Based on the field surface shallow flow experiments, the roughness coefficient value ( n) on different land have been quantitatively demonstrated by changed Manning Formula in this pa-per.

Manning formula has been widely accepted for hydraulic calculation of open channel conduits in hydraulic engineering and water and wastewater works as well.

曼宁公式在给水排水工程和水利工程中进行明渠水力计算时是普遍采用的计算公式。

On Application of Manning formula for torrential current

曼宁公式应用在急变流的探讨

An Application of Manning Formula in Shallow and Wide River

曼宁公式在宽浅型河流中的应用

Because the situation of an actual river is so complex ( not as artificially channels) that using Manning's equation will lead to error inevitably.

因为天然河道形状复杂，故而在近似化为宽浅人工渠道并用曼宁公式处理时不可避免地会带来模型误差。

Besides, as it is very difficult in using Manning's equation to compute directly, traditional method made some approximation in application.

此外，由于直接采用曼宁公式计算比较困难，因此传统算法在实际计算时采取了一些近似方法。

To be sure, we are behind, and will be behind for some time in manned flight.

很显然…我们落后了，并且在载人航天方面将继续落后一段时间。

The craft and the capsule are designed for manned flight, but there is no crew for this test.

飞船和太空舱为载人飞行而设计，但此次试验没有机组人员。

People generally credit the Wright brothers for having accomplished the first manned flight of an airplane.

人们多是歌颂莱特兄弟，是他们实现了飞机的第一次载人飞行。

The manned spacecraft and carrier rocket for the Shenzhou-12 manned space mission have arrived at the Jiuquan Satellite Launch Center in northwest China.

神舟十二号载人飞行任务的载人飞船和运载火箭已抵达中国西北部的酒泉卫星发射中心。

The development process of reliability increasing of manned spaceflight rocket engine was overviewed by several kinds of technologies, including reliability analysis and design, reliability trial, reliability management. The methods are beneficial to other engines in the field of reliabilities increase studies.

本文运用可靠性分析及设计技术、可靠性试验技术和可靠性管理技术对载人航天发动机可靠性增长研制过程进行了综述，对其它型号发动机开展可靠性增长研究有一定的借鉴作用。

Scheme of Chinese manned lunar rocket and its propulsion system The Development of Robotic GTA Welding Quality Control System for Five Port Connector on the Launch Vehicle Propulsion System

运载火箭动力系统五通连接器机器人GTAW质量控制系统

Scheme of Chinese manned lunar rocket and its propulsion system

我国载人登月重型运载火箭动力系统探讨

The Application of Reliability Increasing in the Manned Spaceflight Rocket Engine

可靠性增长技术在载人航天发动机研制中的应用

HISTORY Airborne launches date back decades, most famously to the X-15 program of the 1950s and' 60s, when manned rocket planes were carried aloft under the wing of a B-52 bomber and released on hypersonic research flights.

历史回顾机载发射可以追溯至几十年前，最著名的是上世纪50、60年代的X-15计划，当时一架B-52轰炸机的机翼下搭载了载人火箭飞机，并在超音速飞行的测试研究飞行器上发射。

The public showing was the first concrete evidence of progress since the Rutan-designed SpaceShipOne became the first private, manned rocket to reach space in2004.

本次（“白骑士2号”）的公开亮相成为自2004年鲁丹设计的“太空一号”成为第一艘进入太空的私营载人火箭之后（在太空旅游领域）取得的又一次具体进展。

Another potential advantage for UAS is that future designs may be better able to survive in contested airspace than manned aircraft are.

无人飞行系统的另一潜在优势是，其以后的设计会使其比载人飞行器更好地存活于竞争激烈的空域。

Applying shipborne UAV to radar jamming is the supplement for the manned aircraft and can increase jamming probability effectively.

应用无人机进行雷达干扰可以构成有人干扰机的重要补充，提高干扰效果。

So we can foresee that manned aircraft and unmanned aircraft appear together on the route will become normal.

所以，我们可以预见到在未来的天空里有人飞机与无人飞行器并存的情况将会成为常态。

Advocates of continuing investment in manned aircraft point out that current drones depend on two-way satellite communications.

支持继续在载人飞行器上投入资金的人指出，现有的无人飞信器依赖于双向卫星通讯系统。

Nothing comparable can be done with ground-supporting manned aircraft, he said.

他说到，地面支持的载人驾驶飞机简直无法相比。