查询词典 ET

There are few data to answer this question, but Sala et al.

除了Sala et al，没有其他数据可以回答这个问题。

A lowering of toxicity after the composting process may be related to the degradation of organic pollutants (Semple et al., 2001) as well as other processes which can limit their bioavailability, such as sequestration (Alexander, 2000) or/and bound residue.

在堆肥处理后，毒性的减低可与有机污染物(Semple et al。， 2001)的降低以及其他能限制它们生物有效度的处理相关联，例如螯合作用(Alexander， 2000)或者/以及结合残留物。

Objective To study septic rats on changes in nitric oxide and endothelin-1(ET-1) level in serum.

目的 研究脓毒症大鼠早期血清一氧化氮和内皮素-1(ET-1)水平的变化及相互关系。

This study uses two-sample t test and wilcoxon signed rank sum test and refers to linear multi-regression model used by choi et al.

本研究利用差异检定以及参考Choi et al。

The synthesis of the pentacyclic skeleton of Et-743 and the construction of the five chiral centers thereof.1. The core pentacyclic skeleton of phthalascidin was constructed with L-dopa as the starting material via thirteen steps. First, two basic synthons, the C-1 functionalized tetrahydroisoquinoline compounds 8 and N-protected Z-dopa derivative 9, were prepared from L-dopa. They were coupled via amide bond to form the dipeptide compounds 10, which were the first key intermediates. Then the primary hydroxyl groups were transformed into the corresponding amino aldehydes 11 via Swern oxidation. Followed by the intramolecular Pictet-Spengler cyclization, the pentacyclic compounds 12 were synthesized.

五环骨架的构建及五个正确手性中心的确立：1.1我们以L-多巴为起始原料，经过多步官能团保护和转化合成了基本结构单元8然后和苯丙氨酸衍生物9，通过缩合反应生成酰胺中间体10，经Swern氧化得到醛化合物11，然后再次利用分子内改良的Pictet-Spengler反应一步构建c，d两环，得到五环骨架化合物12，最后，实现了21-位羰基向氰基的转化，得到了C-1位官能化的化合物14，化合物14不但具有和Et-743一致的五环骨架，而且分子中五个手性中心立体构型也与其完全相同：其中，3，位和13，位的手性中心由原料L-多巴带入，而1，位，11，位和21，位手性中心则通过不对称诱导而确立。

ET-1 and CGRP may play an important role in the development of active SLE.

提示ET-1与CGRP失衡可能是SLE活动期发生、发展的重要因素。

Compared with the rest of Europe,however, this interference in the market can be seen as modest:Stephens et al.

然而，与欧洲的其余者相较，市场的这一个干扰可能被调查如谦逊的：史蒂芬 et al。

By superfusion of ET-1, the hypoxiainduced decrease in RPF was remarkably potentiated (from 136±9 to 48±27 bpm) and the occurrence of pacemaker arrest was shifted to 20±6 min.

在缺氧的条件下持续灌流ET-1（1 nmol／L）20 min时，可显著加重缺氧所致的RPF降低，使起搏细胞的RPF由对照的136±9 bpm降至48±27 bpm（p.01），起搏细胞的停跳时间前移至20±6 min。

An engineering approximately design method-equivlent circuit isalso introduced by equilent circuit of waveguide ET-junction and principle of symmetry and of multiplication of matrix.

本文同时依据对称性原理、ET接头的等效电路及传递矩阵的乘积原理建立了波导谐波滤波器的近似工程设计方法——等效电路法，指出等效电路法虽然精度有限、但计算时间很快，可以进行基、谐波全频段分析。

But detail geochemical study indicates (Wu et al., 2002)that those rocks have low Sr〓(0.706), high ε〓(-0.5～-1.9), young age of Nd model age (970-1090Ma) and syngenesis with surrounding I-type granites. The rock originated from partial melting of source igneous rock and belongs to I type granites. The occurrence of high alumina minerals is related to the intense interaction of magma and liquid during the late period of magma evolution, and tetrad REE patterns are formed.

但详细的地球化学研究表明(Wu et al。，2002)，岩体具有低的Sr〓(0.706)、高ε〓(-0.5～-1.9)、年轻的Nd模式年龄(970-1090Ma)及与周围Ⅰ型花岗岩的共生关系，认为岩体是火成岩源岩物质部分熔融的产物，属于Ⅰ型花岗岩，高铝矿物的出现与岩浆演化晚期强烈的岩浆—流体相互作用有关，并形成特征的稀土元素四分组效应。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐