value n. 1.價值;重要性;益處。 2.估價,評價。 3.價格,所值;交換力。 4.(郵票的)面值。 5.等值;值得花的代價。 6.(字等的)真義,意義。 7.【數(shù)學】值;【語言學】音值;【生物學】(分類上的)等級;【音樂】音的長短;【繪畫】明暗配合。 8.〔 pl.〕生活的理想,道德價值;社會準則。 rated value 額定值。 proper value 【物理學】本征值。 commercial [economic] value 經濟價值。 exchange(able) value (= value in exchange) 交換價值。 value in use 使用價值。 surplus value 剩余價值。 face value 票面價格。 market value市價。 pay full value for sth. 對某物付足代價。 the value of the dollar 美元的購買力。 the value of a symbol 某符號的意義。 be of [no] value有[無]價值。 (for) value received 〔支票用語〕貸款…正。 of value有價值的 (news of value重要消息)。 out of value(繪畫等)明暗不調和。 place a value on 估價,評價。 put [set] a high [much] value (up)on 高估;重視,看重。 vt. 1.給…估價,定…的價。 2.對…作出評價;尊重,看重(Troops are valued for quality rather than for number. 兵貴精不貴多)。 value oneself for (what one does, etc.) 夸耀(自己事業(yè)等)。 value oneself (up)on 自夸 (sth.) (value up(on) one's knowledge 夸耀自己的知識)。
In most cases, the molecular weights rise to a finite value with time or conversion . 在大多數(shù)情況下,分子量隨時間或轉化率升高至一個有限的值。
According to gaseous " molecular kinetic , the mass diffusion rate is within finite value . so theoretical conclusion of mass flux ' s producing and the essential relation of flux vs . force could be drawn . with the assumption that local density states in near equilibrium and the distribution is gradual changed , the classical first pick ' s law was modified considering mass relaxation time 根據氣體分子運動論對質量傳播速度為有限值情況下的質量流的產生及流與力之間的本構關系作了理論推導,在假定局域濃度處于近平衡態(tài),其分布為漸進的情況下得到了考慮質量松弛作用的經典fick第一定律的修正式。
The numerical simulation equations of the border curves in term of and as well as the matching rules and the frequency dependence of microwave electromagnetic parameters of a broad - band homogeneous absorbing coating with a finite value of reflection loss are available . these results pointed out the direction to develop rams " . according to the radar - absorbing model , the optimized design of rams with thin - layer , light - weight , broadband and strong - absorbing is available by the simple genetic algorithms , which can effectively conduct the research work of rams to the detail . small but completely , the electromagnetic parameter ' s databases of rams that based on actual microwave absorbers have been set up , the object function has been constructed which conform to the involved goals , the adaptive coding measure is taken which extends the coding length dynamically adapting to the condition of the number of actual absorbers or the precision of thickness and absorber - volume - percentage , the decoding technique is initiated which satisfies light - weight and strong - absorbing as well as thin - layer and broadband by adopting of tracing variable restricting conditions dynamically to control total thickness . when decoding , the variable restricting conditions of thickness are dynamically traced , so gain the radar absorbing coatings of light - weight multiple - layer single - ingredient . similary , of thickness and absorber - volume - percentage , of light - weight multiple - layer multiple - ingredient . also , the rams ' demand to radar - absorb performance as frequency is met making use of the penalty function 作為遺傳算法的具體實施:根據本實驗室近來研制的吸波材料,建立了吸波材料的相關數(shù)據庫;構造了能真實體現(xiàn)“薄、輕、寬、強”優(yōu)化目標的目標函數(shù);根據材料的實際數(shù)量以及涂層厚度精度要求、吸收劑體積分數(shù)精度要求,建立了能動態(tài)擴展相應碼長的自適應編碼方法;首創(chuàng)了通過動態(tài)跟蹤變量的約束條件來控制涂層總厚度的解碼技術,以此實現(xiàn)了在不弱化寬頻、高強的吸波性能目標的同時,兼顧到薄層、輕質的使用性能要求;在解碼時通過動態(tài)跟蹤厚度變量的約束條件,實現(xiàn)了多層單組分吸波涂層對重量輕的要求;通過動態(tài)跟蹤厚度變量的約束條件和吸收劑體積分數(shù)的約束條件,實現(xiàn)了多層多組分吸波涂層對重量輕的要求;使用權重系數(shù)變化法,實現(xiàn)了吸波涂層的分頻段吸波性能要求。