liquid displacement 中文意思是什麼

According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d

本文首先介紹了ld泵浦nd ： yag激光器的發展狀況、主要特性及其應用，從四能級速率方程出發，推導了ld泵浦nd ： yag激光器的閾值、輸出功率和斜效率的表達式，並簡述了激光器的工作原理、結構型式和倍頻方法；其次，以空間相關的速率方程為基礎，提出了ld端面泵浦nd ： yag激光器的設計方法，給出了一定泵浦耦合方式下，振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據，以此為依據，設計了自聚焦透鏡耦合小功率ld泵浦nd ： yag激光器和透鏡組耦合高功率ld泵浦nd ： yag激光器，對激光器的輸出功率和功率穩定性等特性進行了實驗研究；再次，在帶尾纖輸出的高功率ld泵浦nd ： yag激光腔內插入一隻空液晶盒，觀察到了激光器以單縱模運轉；最後，根據泵浦光焦斑端面位置對激光輸出功率的影響規律，提出了ld端面泵浦nd ： yag激光位移傳感新方法，並進行了理論和實驗研究，研究結果表明：當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時，激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律，測量范圍和靈敏度依賴于泵浦功率，隨著泵浦功率的增加，測量范圍擴大，靈敏度提高，當端面泵浦功率為7 . 24w （最大輸出功率為1 . 926w ）時，激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。

It is a vane pump with high head, small flow and low specific speed, which is smaller, flight and simpler in structure than positive displacement pump mulfistage centrifugal pump, and may handle liquid of high gas or steam content

該泵是一種高揚程，低比速的葉片泵，比容積式泵和多級離心泵體積小、重量輕、機構簡單等優點，並可以輸送氣體或蒸氣含量較輕的液體。

Fourthly, with the finite element program, the author analyzes the relationship between the load magnitude or frequency and range of breakage or pore pressure. this can provide appropriate parameters for the method of vibrating grouting. fifthly, adopting the compressible porous medium, the author adduced dynamic theory of liquid saturated porous medium to analyze the displacement and force in the sand when there is dynamic load below the earth surface

基於連續介質力學的混合物理論建立的多孔介質理論和動力控制方程，假設砂土滿足各向同性並處于彈性小應變狀態，豎向振動力將在飽和砂土內部產生三種波，分析了這些波的彌散曲線和特徵衰減曲線，從波傳播的角度，研究了振動力參數和土性參數對振動范圍的影響。

In the case of the unsaturated alcohols, such as hydroxyethyl acrylate ( hea ), the paes showed the photo - alignment property to the nematic liquid crystals with the pretilt angle of 0. 60 ? secondly, three kinds of fluoro - containing diamine monomers were prepared via the reduction reactions of the corresponding dinitro compounds, which were synthesized via the nitro nucleophilic displacement reactions of 3, 5 - dinitro - 5 - trifluoromethyl benzene with diphenol compounds

此外，本論文還設計並通過3 ， 5 -二硝基三氟甲苯與二酚化合物的硝基親核取代反應制備了二硝基化合物，將其還原最終合成了三種間位取代的含氟二胺單體tfpda 、 tfbpda與tfmda ，並對其聚合行為進行了研究。

Abstract : according to the characteristics of solid - liquid two - phase flow, the equation of motion and the equation of continuity for hammer computation are deduced in this paper. the equations are applied to analyze the effect of different prevention deveces used to relieve water hammer pressure in pipeline transport with displacement pumps. it is concluded that the air vessel and pressure relief valve are better than other devices

文摘:本文針對固液兩相流的特點，建立了水擊計算的運動方程及連續方程，並採用新方程對礦山常採用的容積泵輸送中使用的儲氣罐、泄壓閥、緩閉逆止閥等減緩水擊壓力的防護措施進行了計算分析，得出儲氣罐、泄壓閥減壓效果最好的結論。

On the basis of considering the influences upon the conveyance motion of solid phased particles affected by parameters of motive path of sieve chest, inclination of sieve surface, azimuth of vibration, throwing index and adhesive resistance of well drilling liquid etc., the kinetics equations of conveyance speed and displacement of solid phased particles were established

在考慮篩箱運動軌跡、篩面傾角、振動方向角、拋擲指數和鉆井液粘附阻力等參數對固相顆粒運移影響的基礎上，建立了固相顆粒運移速度和位移的動力學方程。

Coating powders - part 3 : determination of density by liquid displacement pyknometer iso 8130 - 3 : 1992

粉末塗料.第3部分:用浮子式液體比重瓶測定密度

Antirux ts801 is a volatile liquid possessing excellent water displacement and penetrating property, specially designed for the gears, bearings and other metal parts manufactured from powder compacting

安特力ts801是一種滲透性特強的揮發性防銹劑，專為粉末冶金齒輪、軸承以及其他金屬零件調配。

Design of a new inductive grating displacement sensor and application in liquid resistant caliper

用於防水數顯卡尺的新型感柵式位移傳感器設計

Liquid displacement displacement technique

液體置換法

Liquid displacement system

液體置換系統

Firstly, the microporous polypropylene membrane was characterized by sem and liquid displacement method

首先用掃描電鏡、液體置換法等手段對聚丙烯微孔膜進行了結構表徵。

Methods of test for paints - testing of coating powders - determination of density of coating powders by liquid displacement pyknometer

塗料試驗方法.第j7部分:粉末塗層試驗.用液體位移比重計測定粉末塗層密度

Liquid hydrocarbons - volumetric measurement by displacement meter systems other than dispensing pumps

液態烴體積測量容積式流量計計量系統

Methods for volumetric measurement of liquid hydrocarbons - displacement meter systems other than dispensing pumps

液態烴類體積測量方法.第1部分:置換流量計系統

It performs a large amount of physical simulation experiment using the multi - function displacement equipment which is imported from american temco company and summarizes the effecting rule of the injected alternating slug size on the displacement efficiency during the alternating injection of gas and liquid. it uses orthogonal method to study the set and type of pre - slug and post - slug and their effect on the displacement efficiency of foam flooding and optimizes the main and sub - slug size so as to decrease the cost while keeping a high displacement efficiency

通過從美國temco公司引進的多功能驅替設備，所做的大量的物理模擬試驗，總結出了氣液交替注入時，注入交替段塞的大小對驅油效率的影響規律，利用正交設計法研究了前後段塞的設置與否及種類對泡沫復合驅驅油效率的影響程度，還對主次段塞的大小進行優化，在保證較高的驅油效率的前提下降低成本。

Abstract : the secular equations of rayleigh waves in a poroelastic half - space soil are developed by analyzing dynamic equation and continuous equation of poroelastic soil. ravleigh surface wave dispersion characteristics and its displacement as well as liquid pressure distributions in saturated half - space soil are discussed

文摘:通過對飽和土中波的運動方程及連續方程分析，推導了飽和土中瑞利波特徵方程，討論了半空間飽和土中瑞利波波速度的彌散特性，以及位移和孔壓分佈情況

The combination of positive displacement rotor and idle wheel of wgb pump had better function and can realized the transportation of liquid with low shear change and no pulse

Wgb泵的正排量轉子和惰輪組合體工作中有較好的緩沖作用，能達到低切變，無脈沖的流體輸送。

Verification regulation of liquid positive displacement flow meter

液體容積式流量計檢定規程