substitution 中文意思是什麼
音標 [ˌsʌbsti'tju:ʃən]
substitution
解釋
n. 名詞 1. 代，代用，代替，更替，置換。2. 【化學】取代；【數學】代換；代入；【法律】預定繼承人；【語法】詞的代用。
adj. 形容詞 -al ,-ary adj. 形容詞
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Tb substitution of pb induces lattice aberrance. this not only lowers the crystallization ability, butalowers the tetragonality of the powders as well
研究發現pt / tb體系中出現了顯著的tb離子特徵熒光和pb離子的熒光現象。 -
Triazophos was a type of low - toxic, high - effective and broad - spectrum phosphorothioate pesticide and acaricide, which was developed in 1970s. it was thought to become the substitution of other pesticide such as methamidophos and dimethoate, so it had a good potential of application
三唑磷是20世紀70年代開發出的一種硫代磷酸酯類殺蟲殺蟎劑，具有低毒、高效、廣譜的特點，是甲胺磷、樂果等農藥的換代產品，具有良好的應用前景。 -
Amines can engage in nucleophile substitution reaction with alky.
胺能參加與鹵代烷的親核取代反應。 -
Using ethyl cyanoacetate, triethyl orthoformate and methylhydrazine as main raw materials, the herbicide pyrazosulfuron was prepared through the reactions of substitution, amination, cylclization, diazotization and chlorosulfonation
摘要以氰乙酸乙酯、原甲酸三乙酯和甲肼等為主要原料，通過取代、胺化、環化、重氮化和氯磺化等反應制得了除草劑吡嘧磺隆原料藥。 -
Material substitution in asme code pressure vessels fabrication
規范製造壓力容器時的材料轉換 -
Bimolecular nucleophilic substitution
雙分子親核取代反應 -
Natural chiron borneol applied in - substitution lactic acid asymmetric synthesis
取代乳酸的不對稱合成 -
In making this substitution i had drawn upon the wisdom of a very remote source-the wisdom of my boyhood.
我這種移花接木的手段是利用一種非常源遠流長的智慧--我小時候的智慧。 -
Bridged bicyclooctanes gave no significant bridgehead substitution.
橋二環辛烷不給出有意義的橋頭取代。 -
The canonical expressions may be converted from one form to another by the suitable substitution of operations.
籍助於適當的取代運算，標準表達式可以由一種形式轉換為另一種形式。 -
For the sake of saving exchange expense, consignation substitution has to replace government ' s function and management of evaluation and performance replace the function of market. the guarantee of system is a condition of organizational structure readjustment
任何一個組織要想變化，都要有巨大的外力擠壓，有組織內部變革的強烈要求，有對未來的策劃能提供具有連貫性替代。 -
But the key of development is system innovation. the change of organizational system is that macro university borrows exchange expense theory, property right theory, and consignation substitution theory of system economics to innovate its systems
根據制度經濟學的交易費用概念，可以解釋學校分立化的合理性，不論是用科層手段，還是用市場手段組織調節都會發生一定的交易費用。 -
Substitution of the number 8 carbon and the number 9 nitrogen also destroys activity as a cytokinin.
取代第8位碳和第9位氮，也破壞作為細胞激動素的活性。 -
Many groups can be added by nucleophilic substitution on a diazonium salt.
許多基團可通過向得自膠的重氮鹽作親核取代而加以導入。 -
Most direct substitution of groups bound to an aromatic nucleus is limited to diazonium salts.
大多數連于芳核能被直接取代的基團僅限於重氮鹽。 -
More recently, the perovskite manganite compounds, la1 - xsrxmno3 have been used as the cathode of the solid oxide fuel cell ( sofc ) because of their electro - ion conductivity properties. in manganite perovskites, substitution of divalent ions ( alkaline earth metals viz
近幾年來， la _ （ 1 - x ） sr _ xmno _ 3這類鈣鈦礦型結構的氧化物材料因為其具有混合電子-離子導電特性而被廣泛的應用於固體氧化物燃料電池陰極材料。 -
The elasticity of substitution is a useful concept in several areas of economics.
置換彈性在若干經濟學領域內是一個有用的概念。 -
As to the separation of p - xylene / m - xylene, in order to blend polymer hydrophobe with p - cd which is preferential to adsorb p - xylene, etherified p - cd was synthesized using benzyl chloride ( phch2cl ). the influences of etherification conditions on the reaction conversion and the degree of substitution of etherified p - cd were investigated. the reaction conversion increases with the increasing of molar ratio of phcr ^ cl : p - cd and the concentration of p - cd
對于px mx體系的分離，為使對px具有優先絡合能力的一環糊精（ cd ）能夠與油溶性高分子共混，本文採用williamson合成法運用氯化芐（ phch _ 2cl ）使-環糊精（ - cd ）醚化，並由元素分析結果，計算出醚化產物的取代度和轉化率，系統地考察了反應條件對轉化率和取代度的影響。 -
Vibrating samples magnetometer ( vsm ) testing implied that yig were of ferrimagnetism, and cerium substitution had effects on saturation magnetization ( ms ), residual magnetization ( mr ) and coercive force ( hc )
Vsm測試結果表明yig屬于亞鐵磁性物質， ce離子的摻雜對飽和磁化強度（ ms ） 、剩餘磁化強度（ mr ） 、矯頑力（ hc ）都有一定的影響。 -
Severe steric effects at the reactive carbon would impede the substitution.
大的立體效應阻止在碳上的取代。
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