Results as following : in the east china sea and the yellow sea, zooplankton showed higher diversity in the low latitude and warm species occurred mainly in the south of 31 n, five communities were distinguished by twinspan method, based on data of species composition and environmental factors. they are : i ) yellow sea neritic community ( f ) with indicator species of labidocera euchaeta in autumn and centropages mcmurrichi in spring ; ii ) yellow sea central community ( hc ) with indicator species of themisto gracilipes, calanus sinicus and euphausia pacifica, the latter two species occurred only in autumn ; iii ) east china sea continental shelf mixed water community ( k ) with indicator species such as rhincalanus cornutus and pterosagitta draco which were confined in waters with high temperature and salinity, iv ) yellow sea and east china sea mixed water community ( he ) and v ) east china sea inshore mixed water community ( m )
根據twinspan等多元分析結果,比較各組群的浮遊動物種類組成和環境特徵,可將東、黃海浮遊動物群落分為5個,黃海沿岸群落( f ) ,指示種秋
季為真刺唇角水蚤,春
季為墨氏胸刺水蚤;黃海中部群落( hc ) ,指示種以細長腳蟲戎為主,秋
季還有中華哲水蚤和太平洋磷蝦;東海外陸架高溫高
鹽群落( k ) ,指示種為角錨哲水蚤、飛龍翼箭蟲等多種狹布型暖水種類;黃東海交匯區群落( he )和東海近岸混合群落( m ) ,兩群落包含多種生態類型種類,其中溫帶近岸低
鹽種在he中較多,廣布性暖水種在m群落中較多。
New developments of polycarboxylic acid derivative catalysts, ion exchange resin catalysts, macrocyclic chelating compound catalysts, quaternary phosphonium salt catalysts, heterogeneous hydrotalcite - type catalysts and other catalysts which to be used in ethylene oxide catalytic hydration, and the catalysts of synthesis method of ethylene glycol via preparation and reaction of ethylene carbonate are expounded
闡述了用於環氧乙烷催化水合反應中的多羧酸衍生物催化體系、離子交換樹脂催化體系、大環螯合物催化體系、
季?
鹽催化體系、多相水滑石型催化體系及其他催化體系近年來的研究進展;同時闡述了用於碳酸亞乙酯法合成乙二醇反應中的催化體系的新進展。
Preparation and property of polycation pva
季銨
鹽烷基醚化陽離子聚乙烯醇制備及性能
Cationics are usually quaternary ammomium salts.
陽離子表面活性劑通常為
季銨
鹽類。
Purple soil classified as regosols in fao soil taxonomy and pup - cambols in china soil taxonomy, is one of well known soil types with the particularities such as weathering easily, high natural fertility, etc., and feeding population of 500 / km2. however, it often meets the water disasters ( sporadic flooding and serious seasonal drought )
摘要紫色土是世界上一種特殊的土類,集中分佈於四川盆地,以其易成土性和富
鹽基性(自然肥力高)養育著500人以上平方公里的人口而著稱於世,但是它分佈的區域存在嚴重的
季節性乾旱和時有發生的洪災等水問題。
There is an annual movement of salt with water in coastal solonchak in liaoning as follows : the thawing - evapo - salinization period in spring, irrigation - leaching - desalting period in rice growing season from may to september, evapo - salinization period again in late fall and relatively stable period in winter
遼寧沿海
鹽土中
鹽分每年隨水移動如下:春
季為凍融-蒸發-
鹽化期, 5 ~ 9月為灌溉-淋洗-脫
鹽水稻種植期,晚秋為蒸發-
鹽化期,冬
季為相對穩定期。
Based on the two ctd data sets from the cruise of the summertime in 2000 and wintertime in 2001 in bohai sea and the collected historic observed thermohaline data, we analyse systemically the distributional characteristics of temperature, salinity and density in wintertime and summertime in the bohai sea and the results reveal that the current hydrologic characteristics of the bohai sea have some obvious variances relative to the previous research results. in summer there are three low - temperature centers in the middle - layer and underlayer of the middle parts of the bohai strait, liaodong bay - mouth and bohai bay - mouth, but there is a uniform high - temperature center in the middle part of the bohai sea. in winter the isotherms extend westward and northward to the bohai sea from the warm core of the bohai strait and a cold - water tongue off the qinhuangdao spreads southeastward out, so the saddle - like isotherm pattern is formed in the middle part of the bohai sea
利用2000年夏
季和2001年冬
季渤海兩次ctd資料和以前收集的渤海溫
鹽調查資料,分析了渤海冬、夏
季溫
鹽密度的分佈特徵,結果表明,渤海現有的水文特徵與以往研究結果相比發生了明顯的變異:夏
季在渤海海峽、遼東灣口和渤海灣口中部中、下層存在三個低溫中心,在渤海中部則出現一個上下均勻一致的高溫中心;冬
季等溫線以渤海海峽暖中心向西和向北兩個方向伸入渤海,而從秦皇島外海有一冷水舌向東南方向伸展,在渤海中部海域形成「馬鞍狀」等溫線結構。
Surface - active agent that this kind of product uses, for instance : gather ethylene glycol, ren base phenol and gather oxygen and ethylene ether, gather the amine salt in alcohol ether, polyvinyl alcohol, alkyl sulphonate, season etc.
該類產品使用的表面活性劑如:聚乙二醇、壬基酚聚氧乙烯醚、聚醇醚、聚乙烯醇、烷基磺酸
鹽、
季胺
鹽等。
We investigated the distribution of the heterotrophic bacteria with the epifluorescence microscope and measured the bacterial production with the tritiated tymicline incorporation method, and we investigated the correlation between the heterotrophic bacteria and chlorophyll, inorganic nitrogen also. there was distinct spatial distribution of the bacterial biomass in the east china sea and the yellow sea during fall and spring
本文利用表面熒光顯微鏡觀測計數法和[甲基- 3h ]胸腺嘧啶示蹤法對春秋兩
季節我國黃、東海異養細菌生態分佈及其生產力狀況,以及異養細菌及其生產力與浮游植物葉綠素、無機氮
鹽之間的關系進行了研究。
The last winter olympics games were held in salt lake city, usa
最後冬
季奧運會在
鹽湖城被舉行,美國。
He rescued the 2002 salt lake city winter olympics from disarray
他的出手解救使得2002年的
鹽湖城冬
季奧運會沒有一團糟。
The ommt used in this study were prepared by replacing na + ions in layered silicates with alkylammonium or alkylphosphonium cations by ion exchange. the two kinds of ommt can be represented by ammo - mmt and pho - mmt
一種為採用烷基季?鹽有機化處理的mmt ( pho - mmt ) ;另一種為採用烷基季銨鹽處理的商品有機土( ammo - mmt ) 。