環內雙鍵 的英文怎麼說
中文拼音 [huánnèishuāngjiàn]
環內雙鍵
英文
cyclic olefinic bond- 環 : Ⅰ名詞1 (環子) ring; hoop 2 (環節) link 3 (姓氏) a surname Ⅱ動詞(圍繞) surround; encircle;...
- 內 : 名詞1. (內部; 里頭; 里邊) inner; inside; within 2. (妻子或妻子的親屬) one's wife or her relatives 3. (姓氏) a surname
- 雙 : Ⅰ形容詞1 (兩個) two; twin; both; dual 2 (偶數的) even 3 (加倍的) double; twofold Ⅱ量詞(用...
- 鍵 : 名詞1 [機械工程] (使軸與齒輪、皮帶輪等連接並固定在一起的零件) key 2 [書面語] (插門的金屬棍子)...
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An effort to engineering plants with elevated aba levels and subsequent stress tolerance has been shown that 9 - cis - epoxycarotenoid dioxygenase ( nced ) is a key enzyme in abscisic acid biosynthesis under drought - stressed conditions. plants overexpressing nced showed an improvement in drought tolerance. however, plants maybe have not good growth with too high level of aba in the plant body
目前通過提高aba水平來提高植物的逆境脅迫耐力的研究表明9 ?順式環氧類胡蘿卜素雙加氧酶( nced )是乾旱脅迫下aba合成中的關鍵酶,並且超表達nced基因可以提高植株的抗旱性;但是如果植物體內積累過多的aba可能會對植物生長造成不良影響。The twelve kinds of modes and equivalent circuits of this inverter with high frequency link within one high frequency switching period are carefully analyzed ; by using the state - space averaging approach, the inverter ’ s averaging model is presented, and the design criterion of key circuit parameters and the output characteristic curve are given ; the analyses of the system stabilization and the mathematic analyzes of the principle of high - frequency - link of this inverter have also be done. prototypes for 1kva 270v 10 % dc / 115v400hzac uni - polarity phase shifting controlled bi - directional voltage mode inverter with high frequency link is designed
以全橋橋式拓撲為例,論述了雙向電壓源型高頻環節逆變器單極性移相控制的原理、逆變器在一個高頻開關周期內的十二個工作模式及其等效電路;採用狀態空間平均法建立了逆變器平均模型,獲得了這類逆變器的關鍵電路參數的設計準則和外特性曲線;分析了系統穩定性,並對逆變器高頻環節原理進行了數學分析。Strategy management is the key to win in the international and domestic changing complicated environment for the export - oriented enterprises
作為外向型經濟微觀基礎的外向型企業,躋身國際、國內雙重復雜多變的環境,戰略管理是其生存、發展和競爭取勝的關鍵。
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