背空蝕 的英文怎麼說
中文拼音 [bēikōngshí]
背空蝕
英文
back cavitation-
( 2 ) the emission spectra of laser ablation metal copper plasma were measured. the detailed mechanism of plume emission of cu plasma was qualitatively explained using a simple model based on excitation of atom and ion in plume arising from inelastic collision between the elemental species and electron with high kinetic energy. under the local thermal equilibrium model, the electronic temperature of copper plasma was deduced to be in the 104 scale by its emission lines
（ 2 ） cu等離子體光譜：在420 570nm波長范圍內觀測了激光燒蝕cu等離子體的光譜和各發射譜線在等離子體中的空間分佈；比較了激光能量對cu等離子體發射光譜、電子溫度的影響；用局部熱力學平衡（ lte ）近似，測得cu等離子體的電子溫度為104k數量級；在不同背景氣壓下，觀測了激光燒蝕cu等離子體光譜的空間分佈。Soil nutrient losses from sloping land - a review
不同土壤侵蝕背景下土地利用的時空演變There are 3 types of reservoir for the continuing subsidence type basin, there are diapir reservoir, fault reservior, drape reservoir, and the source rock is apart from the reservoir, they are contact by fault ; and there are anticline reservoir, fault reservoir, incline reserve ir, mudstone reservoir under the denudation area, and the source rock is contact with the reservoir
以沉降為主要趨勢的盆地的油氣藏有底辟構造油氣藏、斷層油氣藏、披覆構造油氣藏，其烴源巖與油藏在空間上是分離的，並通過斷層相連；剝蝕區以下的油氣藏有背斜油氣藏或斷層油氣藏、向斜油氣藏及泥質巖油氣藏，其烴源巖和油氣藏可有密切的接觸關系。Variations in pressure with and without aeration in cavitation region are measured and the compressible characteristics of pressure waveforms and relation between mach number and compression ratio are analyzed ; the time - averaged pressure profiles of different air concentration in cavitation erosion region are measured, the variations of the pressure with air concentration and effects of back pressure on cavitation erosion are analyzed ; the relations between least air concentration to prevent cavitation erosion and flow velocity are proposed ; the cavitation numbers with and without aeration in cavitation region are compared
實測了空化區摻氣前後壓力的變化，分析了壓力波形的可壓縮流特徵以及馬赫數與壓縮比的關系；實測了空蝕區不同摻氣濃度的時均壓力分佈，分析了壓力隨摻氣濃度的變化及背壓對空蝕的影響；提出減免空蝕的最低摻氣濃度與流速的關系，比較了摻氣前後水流的空化數。The analyse on spatial - temporal feature of land use and land cover under the defferent background of soil erosion
不同土地利用背景下土壤侵蝕空間分佈規律研究分享友人