Venturi tube 文丘利管
converging-diverging nozzle 收斂-擴(kuò)張噴管
mass flow rate   質(zhì)量流率(流量)
sharp-edged orifice  尖銳邊緣的孔
uniformity    均勻性
come into play 起作用
negotiate  v. ①商議, 談判, 協(xié)商, 交涉(with) ②處理 ③使(證券等)流通, 轉(zhuǎn)讓 ④克服(困難), 通過(guò)，越過(guò)(障礙)   .negotiate a bend [corner] 拐彎 
（Example sentence: But as the flow negotiates the body viscosity comes into play.） //boundary layer develops 附面層發(fā)展起來(lái)）
move downstream 向下游運(yùn)動(dòng)
centerline 中心線 
wake region 尾跡區(qū)
signatures  簽字，簽名；鮮明特征 
imbalance  不均衡，失調(diào)
prescribe a control volume  指定一個(gè)控制體
jet impingement on a surface   射流(噴流) 對(duì)表面的碰撞
Froude's Propeller Theory 復(fù)勞德螺旋槳理論
propeller 推進(jìn)器, 螺旋槳
generic[.i'nerik]  a.① (同,定)屬的, 類(lèi)(屬性)的  ② 一般的, 通用的, 普通的
rotating blade 旋轉(zhuǎn)的葉片
mount  v. 安裝
shaft  軸
energize (energise)  vt. ①激發(fā)[勵(lì),磁] ②增能, 供能, 給予能量 ③通以電流, 使…通電[帶電]
(Example sentences: Propellers are a mechanism for the propulsion of an aeroplane. In its generic form a propeller is pair of rotating blades mounted on a shaft that houses the engine as well. As the engine operates the propeller turns sucking a large amount of air. As this air passes through the rotating blades, it gets energised, its speed increases. In the process the required thrust to propel the aircraft is produced. )
 
impart  vt. ①給予, 分給 ②傳給, 傳遞
a thin disc rotating in air 在空氣中旋轉(zhuǎn)的薄盤(pán) 
{.The disc imparts momentum and energy to the incoming air.}
eliminate  v. 消去
pressure tap  測(cè)壓孔 （pressure orifice）
(Example Sentences: Static pressure is conveniently measured by drilling a hole in the wall or the pipe, called the pressure tap. A manometer or a pressure gauge is connected to the tap.) 
static pressure probe  靜壓探頭[針]
stagnation pressure  滯止壓強(qiáng) 
simultaneously  同時(shí)地
Pitot-static tube  皮托靜壓管
pitot tube  皮托管
staic holes  靜壓測(cè)孔
stagnation hole  總壓測(cè)孔
 
6.2 Differential Analysis of Fluid Motion  流體運(yùn)動(dòng)微分分析
sharply different 明顯不同的