螯形的 的英文怎麼說
中文拼音 [áoxíngde]
螯形的
英文
chelate
-
螯 :
名詞（螃蟹等節肢動物的變形的第一對腳） chela; pincers
-
的 :
4次方是 The fourth power of 2 is direction
-
Dithiocarbamate [ s2cnr2 ( dtc ) ] and it ' s derivates were applied in chemistry 、 medical 、 petrochemical and other fields, it can coordinated with all kinds of transition metals, the anion of bidentate ligand also bridges two transition metals
摘要氨荒酸鹽[ s2cnr2 （ dtc ） ]及其衍生物早已廣泛應用於化學、醫學、石油化工等領域，它與所有
的過渡金屬都可以進行配位，
形成
螯合物，雙齒
的陰離子也可以作為橋鏈兩個過渡金屬
的配體。
-
The gel by sodium alcoholate method, added benzoylacetone, have the obvious uv absorption peaks at 265nm and 337nm respectively. when the gel was placed in air, the chelate did n ' t have change. the absorption peak decreased until disappeared when the films were irradiated by the ultraviolet light with the relevant wavelength, which indicated that the films were obviously photosensitive
（ 4 ）通過三種方法制備感光性
的sno _ 2 ： sb （ ato ）溶膠，採用醇鈉法，添加苯酰丙酮制備
的二氧化錫凝膠膜，在265nm和337nm處存在明顯吸收峰，空氣中放置，所
形成
的螯合物不發生變化，用相應波長
的紫外光照射時，這個吸收峰會減小直至消失，表明薄膜具有良好
的感光性。
-
Both the frequency and intensity of 1146. 0cm - 1 change largely, etc. discussed and compared the mechanism of these interaction in detail we got some conclusions as following : both zn2 + and cd2 + ions can chelate with po2 - and come into being - po2 - me2 + n7 ( purine ) chelate. as to zn2 + ions, when r2. 0, the quantity of po2 - zn2 + n7 is directly linear with r. when r2. 0, zn2 + ions even can chelate with c at n3 - o2 sites and this chelation will disrupt the h - bond between gc base pairs and make the dna structure unstable. as to cd2 + ions, only when r is within 1. 0 - 1. 5 can this chelation take place and the relation of the quantity of this chelate with r is not easy to conclude
通過對這些變化進行詳細討論和分析，我們得到了如下
的結論： zn ~ （ 2 + ）和cd ~ （ 2 + ）都可以跟dna
的磷酸基團
螯合，
形成- po _ 2 ~ - … me ~ （ 2 + ） … n7 （ g ）
螯合物，但是前者
的螯合跟離子濃度有很大
的關系，在摩爾濃度比小於2 . 0時，
螯合物
的生成量跟r成正比關系，而後者
的螯合跟離子
的關系不是很明顯，只有當r處於1 . 0至1 . 5之間時，
螯合作用才能進行，並且
螯合物
的生成量跟r之間沒有很明顯
的關系存在。
-
Species resources on chinese mitten - handed crab ( eriocheir sinensis ) have been intimately attached attention to in aquaculture. at first, morphological research was used, and isoenzyme and rapd ( random amplified polymorphic dna ) technique subsequently. these studies showed differences between different water systems from macrocosmic to microcosmic aspect
中華絨螯蟹種質資源的研究一直受到水產界人士的密切關注，從最初形態學的研究開始，經歷了同功酶分析、 rapd技術分析等，這些研究從宏觀到微觀等不同的方面揭示了不同地理水系中華絨螯蟹之間的差異。
