submerged resistance 中文意思是什麼
submerged resistance
解釋
水下阻力- submerged : 暗的
- resistance : n. 1. 抵抗，反抗，抗拒，抵禦；敵對，抵抗力，反抗力，阻力，【生物學】抗病性。2. 【電學】電阻；阻抗；電阻器。
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Numerical models are frequently used to simulate water flow in hydraulic engineering. shallow water equations are basic governing equations with assumption of the velocity distribution uniformly in vertical, so they have some limitations on the simulation of some plane flows, such as wind - induced flow, curve river flow and flow nearby the submerged dikes. for above - mentioned reasons, extended shallow water equations are developed by introduction of momentum coefficient, correction of convection and bed resistance in equations of motion
在水利工程中經常需要採用數學模型模擬水流的流態，淺水方程是進行平面流態模擬計算的基本控制方程，但因其忽略了流速垂線分佈的不均勻性，在模擬某些平面流態（如風生流動、河灣水流、潛壩等工程附近的流動）時存在一定的局限性。 -
In the field of the phytoremediation of copper pollution, submerged macrophytes are focused less than the terrestrial plants. in this study, ceratophyllum demersum l. and cahomba caroliniana a. gray were used as the test plant. the following two aspects were investigated in vivo methods : 1 ) the toxicity effects of cu2 + on the three main antioxidant enzymes ( including cat, pod and sod ) of two submerged macrophytes were detected at different low doses and on the chronic exposure, in order to establish the dose - effect relationship and the time - effect relationship, and thereby acquire the toxicity threshold ; and 2 ) with two submerge macrophytes throng cultured individual or combined on the chronic exposure, it was found on the bcf of copper and the influence of interspecific relationships to the submerge macrophytes resistance or bioconcentration
本論文以兩種大型沉水植物金魚藻（ c . demersuml . ）和水盾草（ c . carolinianaa . ）為受試植物，從它們對水體中cu ~ （ 2 + ）的生物富集作用和動態，以及cu ~ （ 2 + ）對它們體內抗氧化酶的急性毒性效應和亞急性毒性效應兩方面進行了研究： 1 ）通過體內暴露不同劑量的cu ~ （ 2 + ） ，探討cu ~ （ 2 + ）對植物體內三種主要的抗氧化物酶（ sod ， pod ， cat ）的毒理效應，建立劑量?效應關系和時間?效應關系，以揭示沉水植物對cu ~ （ 2 + ）的抗性機制； 2 ）通過對金魚藻，水盾草單獨培養和共同培養的方式，分別研究了兩種沉水植物對cu ~ （ 2 + ）的生物富集系數及其動態以及兩種植物的種間關系對富集銅和植物耐性的影響，綜合評價了兩種植物在銅污染水體的植物修復中的應用前景。 -
The progress situation of the large - sized current - resistance submerged net cage and the technique of the sea - farming
大型深水抗風浪網箱的發展現狀和魚類養殖技術 -
Experimental projects will be conducted in ocean engineering laboratories illustrating concepts taught in class, including ship resistance and model testing, lift and drag forces on submerged bodies, and vehicle propulsion
在海洋工程實驗室中的實驗計畫將輔以解釋課堂間所教授的概念，包括船阻及模組測試、沈體之升力及拖曳力及載具推進力。 -
Square resistance of bapb _ ( 1 - x ) bi _ xo _ 3 based thick films was near - linear increased and tcr of bapb _ ( 1 - x ) bi _ xo _ 3 based thick films was near - linear decreased with increase of content of ag. the electric conduction model of bapb _ ( 1 - x ) bi _ xo _ 3 based thick films was formed. bapb _ ( 1 - x ) bi _ xo _ 3 based thick film is actually conductive with lead and bismuth oxide, the main factors on the properties of thick film is the electric resistance and contact resistance of conductive particulates ; the electric conduction model of ag - bapb _ ( 1 - x ) bi _ xo _ 3 based thick film : the general structure of conductive network is constructed by conductance chain of ag and is submerged into bapb _ ( 1 - x ) bi _ xo _ 3 based conductive ceram
本文認為: bapb _ （ 1 - x ） bi _ xo _ 3厚膜電阻是一種摻有鉛、鉍氧化物的導電陶瓷燒結體，影響厚膜電阻導電性能的主要因素是導電顆粒自身電阻與顆粒間接觸電阻;厚膜電阻摻銀后的導電微觀結構是由許多微小串聯或並聯的ag顆粒組成的導電鏈構成的結構復雜的多維導電網路，此導電網路被「淹沒」在bapb _ （ 1 - x ） bi _ xo _ 3導電燒結體中。
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