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1)  BCR sequential extraction
BCR连续提取
2)  BCR's sequential extraction
BCR连续提取分类法
1.
Then with the incorporation of BCR's sequential extraction procedures,a comprehensive analysis and a detailed discussion are made of the molecular forms of the trace metal pollutants such as Cu,Pb,Zn,Cr .
采用BCR连续提取分类法,结合透射电镜、X-ray粉末衍射光谱、红外光谱、原子吸收光谱和相应的化学法等手段,综合分析了山东小清河济南段底泥沉积物的形貌,主要和次要成分的化学组成,并探讨了在BCR分级提取的各个阶段中被提取的底泥试样污染物Cu,Pb,Zn,Cr,Cd的分子存在形态。
3)  sequential extraction
连续提取
1.
The rice roots were separated into nodal roots and lateral roots,which were extracted individually using a three-step sequential extraction procedure to measure the sorbed,strongly sorbed and interior adsorbed fractions.
将水稻根分为节根和侧根2部分,并采用连续提取方法将根系中的多环芳烃分为3种形态:根表弱吸着态、根表强吸着态和根内吸收态。
2.
005(mol·L~(-1)) DTPA) were evaluated by using a short three-step sequential extraction procedure.
L-1DTPA作为提取剂,用简化的3步连续提取法对贵州省赫章县土法炼锌污染土壤中Zn、Cd的形态进行了分析。
3.
The fractionations of Cu,Cr,Ni,Pb and Mn in soil collected from contaminated paddy soils and non-contaminated paddy soils near an electroplating plant were investigated using the five-stage sequential extraction procedure.
通过连续提取法对电镀废水污染区和对照区水稻田土壤中重金属元素Cu、Cr、Ni、Pb和Mn的形态进行了分析研究。
4)  Continuous extraction
连续提取
1.
5 % ammonia as extraction solvent, and adopting continuous extraction technology,more than 11 % rate of return of glycyrrhizic acid can be attained,approximately 8 % higher than water reflux method, the extraction time can be nearly half shortened.
5%的10%乙醇溶液作萃取剂,采用连续提取工艺,甘草酸收率可达11%以上,较水回流法提高约8%,提取时间缩短近一半,液固比从14:1降低至6:1,而且产品内在质量明显提高。
5)  continuous isolation
连续化提取
1.
So the continuous isolation of three main proteins from egg white was realized.
离子交换层析,分离得到溶菌酶和卵铁传递蛋白,从而实现了蛋清中三种蛋白质的连续化提取。
6)  sequential extraction
连续提取法
1.
In this experiment, phosphorus fixation and release characteristics were studied with added different concentrations of P (water∶soil is 1∶20) and sequential extraction.
通过向水稻土中加入不同量的磷(水土比为20∶1)进行培养,并利用连续提取法,对水稻土磷的固定和释放特性进行了研究。
2.
The speciations of heavy metals(Cu,Pb,Zn,Cd and Cr )in sediments from Lake Taihu are analyzed using a sequential extraction proce dure.
用连续提取法分析了太湖沉积物5种重金属的地球化学形态,对地球化学形态的组成和地理特征进行了分析研究。
补充资料:连续和非连续孔径射电望远镜
      射电望远镜因接收天体射电的天线孔径的构成方式不同,而有连续孔径和非连续孔径之分。连续孔径射电望远镜是射电望远镜的一种最简单的类型,其天线孔径为接收单元所布满,因而天线增益和分辨率全由天线孔径的实际尺寸和形状决定。这类望远镜天线孔径可以有各种形状,如通常的抛物面、球面、抛物柱面、抛物带形反射面等。某些由分立天线(如偶极子天线、裂缝波导等)组成的天线阵,当阵元间距不大于半波长时,由于电场强度方向图和连续面电流分布的场强方向图相似,也被认为是连续孔径射电望远镜。这种情况更常见于线孔径或米波、十米波段的偶极子阵。非连续孔径射电望远镜是天线结构只分布在孔径部分面积内的望远镜,通常由多个天线组成。栅式干涉仪、复合射电干涉仪、栅十字、 T形栅、圆阵、圆环以及综合孔径射电望远镜等都是。这种望远镜的分辨率由天线范围(设想的孔径)的外尺寸决定,而总的天线增益或灵敏度,则取决于全部天线单元面积的总和。图中a所示的连续孔径天线可认为由N个单元面积组成,经天线传至接收机的信号是各单元反射信号的迭加,连续孔径射电望远镜通过焦点处的馈源自动得到这种迭加。由于二单元A、B信号的迭加效果等效于处在A、B的相关干涉仪输出,非连续孔径射电望远镜正是基于这个原理,在省去孔径一部分的情况下,保留连续孔径各单元间的全部间距和取向,如图中b所示的"骨架式"射电望远镜,或者依观测需要对这些间距和取向进行有限的采样(各种干涉阵),甚至用不少于2的有限天线依次采样后进行处理;图中c是综合孔径望远镜。
  

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