多循环的

In this "five-step", the evolution of the first step in the series of groups of animals very strange: 14 more haikou insect specimens comparative anatomy studies show that, they not only, and the lack of chordomas in skin, muscle, breathing, circulation, neural organs such as the system with the fundamental difference between the existing chordates, One of the most distinctive is the gills of six foreign composed of respiratory system, and this is the mouth of higher animals in the gills.

在这分&五步走&的演化系列中，&第一步&的动物类群十分奇特：对1400多枚海口虫标本进行比较解剖学研究表明，它们不仅缺少脊索构造，而且在皮肤、肌肉、呼吸、循环、神经等器官系统上与脊索动物存在着根本差别；其中最为独特的是其由6对外鳃组成的呼吸系统，这与较为高等的后口动物的勤鳃迥然有别。

In this five-step, the evolution of the first step in the series of groups of animals very strange: 14 more haikou insect specimens comparative anatomy studies show that, they not only, and the lack of chordomas in skin, muscle, breathing, circulation, neural organs such as the system with the fundamental difference between the existing chordates, One of the most distinctive is the gills of six foreign composed of respiratory system, and this is the mouth of higher animals in the gills.

在这分&五步走&的演化系列中，&第一步&的动物类群十分奇特：对1400多枚海口虫标本进行比较解剖学研究表明，它们不仅缺少脊索构造，而且在皮肤、肌肉、呼吸、循环、神经等器官系统上与脊索动物存在着根本区别；其中最为独特的是其由6对外鳃组成的呼吸系统，这与较为高等的后口动物的内鳃迥然有别。

This Sm-catalyzed reaction firstly efficiently realized the catalytic cycle in the tandem rearrangement/reduction reaction of α-hydroxy epoxides, and moreover the diastereoselective amplification could be distinctly observed when two C1 epimers in substrate were subjected to this catalytic tandem reaction.

该催化的多功能串联反应，高度非对映选择性地一步控制了含有季碳的三个相邻立体中心，有效地构建了&2-季碳1，3-二醇&结构单元，首次实现了此类重排—还原过程的催化循环，其中对于两个C1位的差向异构体底物，此反应具有明显的非对映选择性放大特点。

This paper introduces the optimum selection on pipe diameter of feed water system for Zhejiang Guohua Ninghai Power Plant PhaseⅡ 2×1 000 MW Extension Project.

介绍了浙江国华宁海电厂二期2×1 000MW扩建工程给水系统管径优化的情况，对高压给水管道管径优化进行了详细的计算和分析，在对给水系统管径的多方案进行技术经济比较后，给出了优选出的低压给水管道、高压给水管道以及给水再循环管道的规格。

Then the self-recurrent neural network structure, one kind of simplified structure of internal recurrent network, and the leaming algorithm, dynamic backpropogation algorithm of self-recurrent neural network, is proposed.

本文将神经网络作为传统的线性模型的非线性推广进行了分析，证实了多层前向神经网络与非线性自回归模型的等价意义，及带有反馈的循环神经网络与非线性自回归移动平均模型的等价意义。

The liquid radioactive contamination comes from the radioactive substances produced by the circulatory cooled water activated after neutron radiation;the solid radioactive contamination comes from the match plate in the hot working chamber,the collimation equipment...

液态放射性污染主要指加速器冷却循环水受中子照射被活化形成放射性物质；固体放射性污染为热室工作箱内的模板，退役加速器离子源、准直器和靶周围被活化的器件及与放射性制剂分装、注射相关的用品；放射性气态污染，主要指中子使空气活化产生核素11C、13N、15O、41Ar，空气中其它成份被中子活化产额低，多为气溶胶状态；另外放射性表面污染主要指加速器厅内被活化的固体器件，冷却水破裂或放射性药物意外污染，有关传递通道和贮源容器的表面放射性污染。

In different fields: harbour, iron and steel, metallurgical, cementworks, woodworks, and in the ecological field in the biggest and most modern plants for the burning and recycling of all kinds of waste. Its advanced know-how is a quality guarantee for its whole production range. EUROMEC's technical

她为多个不同行业机构生产供应物料处理的机器，包括港口，钢铁业、金属业、水泥业、木材业以至为生态行业中的大型和先进厂户提供废料被焚化及循环再造的设备，由于她拥有先进的技术，不单是品质的保证，还可进行全面化的生产。

Most kinds of the raw materials for making porcelain, such as clay, feldspar, alumina, quartz and so on have been processed in the raw materials factories.

针对现在我国陶瓷工业中所用的粘土类、长石类、矾土类、石英类等原料多已在原料厂经过了加工处理，陶瓷的制浆则由原来的以研磨为主转变成了以混合与研磨为主的状况，本文改进了篮式砂磨机的结构，设计出了内循环高效研磨机。

To cycle the action when the oil drain back into the worm gear in the box, separate the return of the oil storage tanks, resulting in increasing number of worm gear box of oil, while the oil inside the oil less and less.

经检查与分析，发现是因蜗轮、蜗杆的密封圈磨损、密封不良，使循环动作的机油在回流时漏入蜗轮箱内，分流了返回储油箱的机油，造成蜗轮箱内的机油越来越多，而储油箱内的机油越来越少。

This means raising the rate of utilization of solar energy setting up and managing an agriculture production system of self-maintenance, low investment and economic feasibility and promoting recycling and repeated utilization within the system, so as to obtain improvements in production the protection of the ecological environment, the reutilization of energy and the economic benefits

所谓生态农业，就是按照生态学原理合理地安排生产结构和产品布局，努力提高太阳能的固定率和利用率，建立和管理一个生态上自我维持的低输入经济上可行的农业生产系统，促进物质在系统内部的循环利用和多次重复利用，从而获得生产发展、生态环境保护、能源再生利用、经济效益四者统一的综合性效果。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。