負向光性 的英文怎麼說
中文拼音 [fùxiàngguāngxìng]
負向光性
英文
negative phototaxis-
The most achievement is that we firstly obtain the analytic accurate solution of the modal fields of the waveguide structure and find some available character : ( 1 ) the different uniaxial crystal materials have the different propagation properties ; ( 2 ) when the optical axis of the crystal is on the plane that is made up of the normal direction of the waveguide plane and the propagation, there are te mode and tm mode in this special waveguide, but the principal mode is different of the character of the uniaxial crystal, the principal mode is the principal mode of te mode for the negative uniaxial crystal, but the one of tm mode for the positive uniaxial crystal ; ( 3 ) when the crystal optical - axis parallel to the waveguide plane, for the positive uniaxial crystal material, the principal mode of the waveguide is a te wave, which can be excited by the light at any frequency ; when the light frequency satisfies a single mode propagation condition, there will be only the principal mode propagating in the waveguide, otherwise some of the higher order modes can be excited, which are neither te modes, nor tm modes, but the hybrid guided modes
本文就是在此背景下，利用金屬波導和單軸晶體的一些特性，結合麥克斯韋方程組和波導的邊界條件，從三種不同的情況研究了光在對稱平面單軸晶體金屬波導（波導層是單軸晶體，兩個波導界面均為金屬）內的傳輸特性，其主要貢獻為，首次解析地得到了這種波導結構下模式場的精確解，並發現了一些有用的特性： （ 1 ）模式場的性質因單軸晶體的性質不同而異； （ 2 ）當單軸晶體光軸位於波導界面法方向與傳輸方向構成的平面內時，波導中傳輸te波和tm波，只不過其主模因單軸晶體的性質不同而異，當波導層介質為負單軸晶體時，波導主模是te波主模，而波導層介質為正單軸晶體時波導主模是tm波主模。 （ 3 ）當單軸晶體光軸位於波導面內時，對于正單軸晶體，波導的主模是橫電波te _ 0模，任何頻率的光波均可激勵該模式；當光波波長滿足一定條件時，波導內傳輸單模，否則，將激勵起高階模式，高階模即匪te波，也匪tm波，而是兩者耦合而成的混合模。According to its uses, lcd panel can be classified into 9 categories such as communication, domestic electrical appliance, palm computer, transportation means, measuring apparatus, meters and instruments, stationery, entertainment facility and others. according to display methods, lcd panel can be divided into two types, i. e. positive and negative types. according to optical modes, lcd panel falls into four categories, namely, reflective, transmissive, transflective and holographic types
液晶顯示屏lcd分類方式有多種，如：按產品用途，可分為通信工具家用電器掌上電腦交通工具計量器械儀器儀表文教器具游藝設施等類別按顯示方式，可分為正性負性兩類按光學模式，可分為反射型透射型半透半反型全息型等4類按lcd類別，可分為tn型htn型stn型fstn型按顏色模式，可分為黃綠灰黑白藍等按觀察方向，可分為3 6 9 12點鐘及其它等。An experimental investigation of fiber bragg grating transverse load sensitivity
光柵橫向負載敏感特性的實驗研究The optical effect on the uniformity of mesfet threshold voltage is studied. results show that optical radiation enhances the drain - source current of the gaas mesfet, and makes the threshold voltage to move toward negative direction. optical radiation enhances the uniformity of mesfet threshold voltage
本文研究了光照對閾值電壓均勻性的影響，觀察到在光照條件下，耗盡型mesfet的溝道電流增加，閾值電壓向負方向增加，光照提高了閾值電壓的均勻性。分享友人