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     Rate-determining Step of O~(2-)Transportation in the RuO_2|Pd|YSZ|Pd deNO_x Cell
     在RuO_2|Pd|YSZ|PddeNO_x电解池中O~(2-)传导的速控步骤
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     Primer combinations E-ACA/M-CAG, E-ACA/M-CTG and E-ACC/M-CAGamplified polymorphic fragments in swelling pool.
     引物组合E-ACA/M-CAG、E-ACA/M-CTG和E-ACC/M-CAG均在膨大的基因池中扩增出多态性条带。
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     The kinetics of U(Ⅵ) electro-reduction with the system of HNO3-N2H5NO3(H2O) /UO2(NO3)2-HN03 (30%TBP-OK) has been investigated.
     本文在带有阴阳极的恒界面池中研究了HNO_3-N_2H_5NO_3(H_2O)/UO_2(NO_3)_2-HNO_3(30%TBP-煤油)体系中U(Ⅵ)电还原动力学。
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     The technical feature of this scheme is adding a sharing conversion pool between waveband switching matrix and wavelength switching matrix to share wavelength/waveband converts.
     该方案的技术特点在于在波带交换矩阵和波长交换矩阵之间增加了一个共享转换池,光纤中需要进行转换的波带和波长都进入共享转换池,共享使用转换池中的波长/波带转换器进行转换。
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     The results showed that the mean density of bacterioplankton in ponds 1#, 3# and 2# were (14.55±5.67)×108 /L,(8.44±2.75)×108 /L and (24.52±8.71)×108 /L,respectively;
     结果表明,1#、3#和2#池中浮游细菌的密度依次为(14 55±5 67)×108个/L、(8 44±2 75)×108个/L和(24 52±8 71)×108个/L,而浮游细菌的生物量依次为(6 75±2 63)、(4 39±1 01)和(11 38±4 52)mg/L。
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     A New Method in the Aerator.
     曝气池中的新文
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     Stochastic Process of Sediment inSettling Basin
     沉沙池中泥沙的随机运动
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In order to approach the world level of shipbuilding,science within twelve years,it is necessary to survey the recent development in shipbuilding research of some leading maritime countries.This paper starts with stating the achievments of shipbuilding research work in this himdred years and steps taken by some leading countries for further development after the World War Ⅱ.Then it goes on to discuss the main achievments in the field of ship hydrodynamics and ship strength in recent years,and these are subdivided...

In order to approach the world level of shipbuilding,science within twelve years,it is necessary to survey the recent development in shipbuilding research of some leading maritime countries.This paper starts with stating the achievments of shipbuilding research work in this himdred years and steps taken by some leading countries for further development after the World War Ⅱ.Then it goes on to discuss the main achievments in the field of ship hydrodynamics and ship strength in recent years,and these are subdivided into the following headings: Ship hydrodynamics:(1)Systematic model testing.(2)Model-ship co-relalion, (3)Theory of wave making resistance,(4) Systematic testing of model propellers, (5)Propeller theory,(6)Cavitation,erosion,Singing of propellers,(7)Ship motion and seakeeping quality. Strength of ships: (1) Strength testing of actual ships and stress measure- ments on sea way,(2)Strength testing in model tank,(3)Problem of long superstructure,(4) Elastic and plastic strength of ship plating,(5) Ship vibration, (6) Materials for ship construction. This paper also gives an account of the preliminary achievments of the Chinese shipbuilding research work in respective fields and expresses the opinion that a great deal of amount of work is left to be done for the Chinese naval architects.Finally,the paper suggests that China must redouble her effort to construct her main shipbuilding research base equiped with instruments and apparatus of highest quality and to train the research experts as quick as possible.

为了在十二年内争取赶上世界的造船科学水平,就有必要对世界各国造船科学研究的发展,进行一番探讨。本文首先说明造船科学在百年来所起的作用,和二次世界大战后各国对造船科学研究的组织和发展。进一步探讨了二次大战后在船舶流体力学及船体强度学两方面的主要成就。并分以下几部份叙述: 船舶流体力学方面:(1)关于船型的系列试验;(2)关于船模与实船的换算关系;(3)兴波阻力理论;(4)推进器系列试验;(5)推进器理论;(6)推进器空泡、剥蚀、唱音等问题;(7)船舶运动和适航性。船体强度学方面:(1)实船强度试验和航行中应力测量;(2)船模试验池中的强度试验;(3)长上层建筑问题;(4)船体钢板的弹性塑性问题;(5)船体振动问题;(6)造船用材料问题。文中也涉及一些我国造船科学研究的初步收获,并说明我国在整个造船科学领域中还留着很大空白面。为了进一步发展我国的造船科学研究;建设主要的研究基地,充实仪表设备和培养研究人员是刻不容缓的事。

~~

本文为水利水电科学研究院冷却池試驗研究阶段总結报告的部分摘要。內容分两部分:第一部分小結了模型試驗及原体观測中发現的一些有普遍性的水流流动和热量分布規律,提出了溫差异重流、热掺混中心等現象及其对冷却池中水流运动的影响;第二部分为对冷却池水工規划布置的一些具体建議。可供有关設計部門参考。

The molecular weight distribution by sedimentation velocity measurements and hydrostatic pressure correction for the sedimentation coefficient of the floating system poly-dimethylsiloxane-bromocyclohexane at θ-temperature (28 ℃) have been studied. A new method for the experimental evaluation of the hydrostatic pressure correction of the sedimentation coefficient is proposed. By using different quantities of the solution added to the sedimentation cell, so as to give different heights of the liquid column, it...

The molecular weight distribution by sedimentation velocity measurements and hydrostatic pressure correction for the sedimentation coefficient of the floating system poly-dimethylsiloxane-bromocyclohexane at θ-temperature (28 ℃) have been studied. A new method for the experimental evaluation of the hydrostatic pressure correction of the sedimentation coefficient is proposed. By using different quantities of the solution added to the sedimentation cell, so as to give different heights of the liquid column, it is possible to determine the influence of the hydrostatic pressure on the sedimentation coefficient. Assuming a linear relation between the sedimentation coefficient and the hydrostatic pressure, the authors found that the pressure coefficient of the system studied is 1.44×10-3 (atm)-1 for hydrostatic pressures less than 200 atm.From the distribution of sedimentation coefficients, and the values of Mw, [η]θ, and [η] toluene of a polydimethylsiloxane fraction the monodisperse relationships s-M, [η]θ-M, in the θ-solvent at 28℃ and [η]tolucne-M at 25℃ are obtained:s1 = 6.30 × 10-16M0.50 (bromocyclohexane, 28℃) [η]θ = 7.41 × 10-2 M0.50 (bromocyclohexane, 28℃) [η] = 9.53 × 10-3 M0.71 (toluene, 25℃)

对聚二甲基硅氧烷-溴代环己烷θ溶液(28℃)体系进行了沉降速度法测定分子量分布及沉降系数压力改正的研究。提出了一种新的直接测定沉降系数的压力改正的方法,即在沉降池中加入不同量的溶液以得到不同的液柱高来改变静压,测定溶液界面在不同静压下的浮升速度计算压力系数。所得适用 于静压为200大气压以下的沉降系数的压力改正系数α=1.44×10~(-3)_(大气压)~(-1)。从沉降系数分布、(?)_ω、[η]_θ及[η]_(甲苯)的测定,订定了聚二甲基硅氧烷在28℃θ条件下的s-M,[η]_θ-M及在甲苯(25℃,良溶剂)中的[η]-M单分散关系为。 s_1=6.30×10~(16)M~(0.50)(溴代环己烷,28℃) [η]=7.41×10~(-2)M~(0.50)(溴代环己烷,28℃) [η]=9.53×10~(-3)M~(0.71)(甲苯,25℃)

 
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