selective role 中文意思是什麼
selective role
解釋
選擇作用-
Recently, ldl apheresis has been applied in clinic and achieves a satisactory effect. in this dissertation, the tripeptide, serine - aspartic - glutamic acid ( sde ), which existes in the cooh - terminal end of the seven repeats in the ligand binding domain of the ldl receptor and plays an important role in identifying ldl, was synthetized and immobilized onto the polyacrylamide ( paam ) beads as a bionic adsorbent for selective removal of ldl from plasma
本論文以絲氨酰-天冬氨酰-谷氨酸（ sde ）負電性三肽（此三肽廣泛存在於ldl受體配體結合域7個重復序列的羧基末端，對ldl受體特異性識別ldl起著重要作用）作為配體固定到聚丙烯酰胺微球載體上製成仿生性ldl親和吸附劑，考察其對人血漿中ldl及hdl的吸附功效。 -
The safety of transmission line plays a important role in power system safety it is not only the requirement of ensure supply power reliability, but also the necessary precondition of enhance power system stabilization, to remove faulty line quickly and accurately, also keep non - faulty line continuous work when some transmission line faults current differential protection is a kind of simple, reliable and good - selective protection manner to any variety of transmission lines, power system development needs current differential protection apply to transmission lines, moreover the advancement of electric and communication technology enable current differential protection apply to transmission lines firstly, the paper discusses, analyses the research and application transmission line protection in detail, compare the principle and realistic presupposition of general line pilot protections secondly, because conventional current vector differential protection are influenced easily by load current and transitional resistance, in order to at the same time quicken protection act, the principle and criterion include work characteristic of differential protect based on fault component sampled values are studied, results shows that differential protect based on fault component sampled values excels general vector current differential protection in reliability, sensitivity and anti - saturation of current transformer in addition, synchronous current sampling methods at all terminals of line is analyzed and estimated lastly, the principle and criterion. also device design about current sampling values differential protection based on optical fiber communication, which apply to short transmission lines are concretely investigated,
基於基爾霍夫定律的電流差動保護無論對於何種形式的輸電線路都是一種簡單、可靠、選擇性強的保護形式，電力系統的發展使得電流差動保護應用於線路保護成為需要，而電子、通信技術的發展使得電流差動保護應用於輸電線路成為可能。首先，本文對目前線路保護的研究和實際應用情況進行了討論和分析，比較了常用線路縱聯保護的實現原理和實現條件及優缺點。其次，針對常規相量電流差動保護易受正常負荷電流和故障過渡電阻影響的缺點，同時為加快差動保護的動作速度，對基於故障分量瞬時采樣值電流差動保護的原理、判據、動作特性等作了討論和分析，結果表明基於故障分量瞬時采樣值電流差動保護在可靠性、靈敏度、抗電流互感器飽和方面明顯優于常規相量電流差動保護，對電流差動保護各端的同步采樣方法和數據通信也進行了分析和評價。 -
Analysis of finite array structure plays an important role in the design of array antenna and frequency selective surface
有限陣列散射場的分析對于陣列天線的隱身設計和頻率選擇表面的設計具有重要作用。 -
The results of research on how much knowledge middle school students acquire and on what listening strategies they often use show that listening strategies, especially the strategies of directed attention, selective attention, self - management, self - evaluation, elaboration, transfer, note - taking, contextualisation, keyword - using and self - talk, often play a major role in students " achievements of listening comprehension
特別是元認知策略中的集中注意策略、選擇注意策略、自我管理策略和自我評價策略，認知策略中的聯想策略、遷移策略、簡記策略、藉助上下文策略和利用關鍵詞策略以及社會情感策略中的自我交談策略非常明顯地影響著中學生的英語聽力能力。 -
The role of natural selection in evolution was formulated only a little more than a hundred years ago, and the selective role of the environment in shaping and maintaining the behavior of the individual is only beginning to be recognized and studied
進化論中的自然選擇學說僅僅是在一百多年前形成，但是在人物個體的修整和維持方面的環境選擇則是剛剛被認識和研究。 -
As a part of new materials, nanostructured materials are playing an important role in many fields, such as information, manufacturing, biotechnology and agriculture etc. in this paper, we have deve loped several methods for preparation of ni, ceoi and co / ni nanopowders, and have studied their application in catalytic dehydrogenation, ion - selective electrodes and industrialize amplification of nickel nanopowder
使得納米粉體材料與常規粉體材料相比具有一系列電、磁、光及力學等方面的新異特性，從而使其作為一種新型材料在電子、信息、農業、冶金、宇航、化工和生物醫學等領域佔有十分重要的地位。 -
Objective : to determine the characteristics of eighteen cases withrare coronary artery malformations （ cam ） and evaluate the role of selective coronary angiography in the final diagnoses of cam
目的：探討18例少見冠狀動脈（冠脈）畸形特徵及評價選擇性冠脈造影在其診斷中的作用。 -
3 the role of natural selection in evolution was formulated only a little more than 100 years ago, and the selective role of the environment in shaping and maintaining the behavior of the individual is only beginning to be recognized and studied
科學家闡明自然選擇在進化中的作用只有100多年的歷史，而認識和研究環境在個體行為形成和維持的選擇作用才剛剛開始。 -
The role of natural selection in evolution was * * * ulated only a little more than a hundred years ago, and the selective role of the environment is shaping and maintaining the behavior of individual is only beginning to be recognized and studied
自然選擇在進化的過程中的角色早在一百年前就形成了，而環境在塑造和維持個體的行為時的選擇作用才開始得以研究和研究。 -
Given that young people s choice of newspapers and magazines is influenced by their families and that the family can shape young people s television viewing habits, parents can assume a more proactive role to help their children to be selective in the use of the media
既然青少年在選擇報刊時主要受到家人影響，而家庭亦是塑造他們收看電視習慣的重要場所，家長在當中其實可以採取一個較主動的角色，幫助他們的子女選擇合適的媒介。
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