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Analyses of the water quality variation show that aquiculture is a main source of organic pollution, and the growth of the urban population is the main reason for nutrient pollution.

分析总结了水质污染变化原因，指出衡阳市养殖业的发展成为衡阳段有机污染的重要来源之一，城镇人口增加是营养型污染增加的主要原因。

Sport watch, Swiss-Made automatic movement displaying 6-hour, 30-minute and 60-second subdial, Main dial polished silver-tone hour/minute hands with luminous accents and polished chronograph-seconds sweep hand, Subdials displayed by silver-tone hands, Main dial applied and polished silver-tone luminescent baton markers, White Arabic numbers/indices mark subdials, Red/white numbers and white indices mark outer minute track, Analog date display at 3, Polished silver-tone stainless steel round bezel and case with raised design at case sides, Polished screw-in crown and steel pushers, Stainless steel screw-in 'skeleton' caseback, Sapphire crystal, 200 meters/660 feet water resistant.

运动手表，瑞士制造的自动运动显示6小时，30分钟和60秒的表盘，抛光银主拨号音小时/分钟双手发光口音和抛光计时，秒扫手，Subdials显示的银色色调手，主要应用于拨号和抛光银双色荧光指挥棒标记，白色阿拉伯数字/指数马克subdials，红/白，白指数的数字标记外分钟跟踪，模拟3日期显示，抛光银双色不锈钢圆形边框并设立案件提出了设计方面的情况，抛光螺钉在'在冠和钢铁顶推船，不锈钢螺钉骨架'表壳，蓝宝石水晶，200 meters/660英尺防水。

K, the parent element of 40Arr, has different abundance in coal and argillite, which can be used in analyzing the difference between 40Ar/36Ar values of natural gases produced from coal and argillite, and identifying the main gas source in coal source rocks. In this paper, the forming mechanism of 40Arr and its process of entering into gas pool are discussed, on the basis of which a method for identification of main gas source is developed.

本文系统地讨论了 40Ar的形成机理及其运移进入气藏的过程，利用 40Ar的母体元素 K在煤和煤系泥岩中的丰度差异，分析了以煤和煤系泥岩为母源的天然气 40Ar/36Ar同位素组成上的不同，并利用这种差异对煤系中煤岩或煤系泥岩为源岩的天然气藏的主力源岩进行了判识，继而建立了利用氩同位素组成判识煤系烃源岩主力源岩的方法。

The main heat-proof and temperature-preserving covers are Silurian and Ordovician argillite of Gaozaitian Formation and Meitan Formation.The main thermal reservoir layer is Cambrian carbonate rock of Loushanguan Group.The aquatic chemistry of the hot ground water and drilling data indicate that the reservoir depth ranges from 1300 to 2500m and the geothermal gradient from 2.44 to 2.84℃/100 m. It is pointed out that there may exist another geothermal field in the plunging part of the east limb of Wudang Anticline.Some suggestions are made about the development and protection of the geothermal field.

其主要隔热保温盖层为志留系高寨田群(S1g)和奥陶系湄潭组(01m)泥页岩，主要热储层为寒武娄山关群(∈2-3ls)碳酸盐岩，根据地下热水水质化学成份特征及钻探资料，其深度为1300-2500 m，地温梯度2.44-2.84℃/100 m；指出乌当背斜东翼倾伏端有另一地热田存在可能性；以及对地热田研究开发、保护的意见。

Introduces a type of screw sump cleaning machine used in coal mine, main discusses about composing structure specialty, work principle, technics flow, electric control system, suit work conditions, main specialty and using this machine for attainability purpose.

介绍了一种用于煤矿井下水仓清理的螺旋水仓清理机，重点论述了螺旋水仓清理机的结构组成特点、作原理、艺流程、气控制系统，适应工作条件，主要特点，以及采用该机可达到的目的。

The ratios of components especially two main components Ⅰ and Ⅱ varied significantly among different generations, and displayed similar law as that of titer. The ratio of two main components was close to the ratio of commercial attractant source in China or aboard, but that of the third and fourth generations were significantly different.

各组分的比例特别是两主要组分Ⅰ、Ⅱ的比例不同代间差异显著，差异性规律与滴度变异规律相同，一、二代两主要组分的比例接近与目前国内外商品化诱芯的配比，而三、四代的比例则差异显著。

The automorphic, hypidiomorphic and xenomorphic granular textures are the main ore textures and vein and disseminated structures are the main ore structure.

矿石多具白形、半自形、他形粒状结构，以脉状、浸染状构造为主。

The automorphic, hypidiomorphic and xenomorphic granular textures are the main ore textures, and vein and disseminated structures are the main ore structure.

矿石多具自形、半自形、他形粒状结构，以脉状、浸染状构造为主。

The key part of light alarm circuit of the system is the flashing tube and the life level of the main charge and discharge capacitance. Thus ,in this design, adopted autotransformer step-up type, two-level filter and double flashing tube, in order to light the burden of the main charge and discharge capacitance, reduce the heat productivity and extend the life level of the capacitance.

在系统的光报警电路中关键部件是频闪管和主充放电容的寿命，因此在电路设计中采用自耦变压器升压方式和双级滤波、双频闪管等独特的电路结构，减轻主充放电容的负担，减少发热量，延长电容使用寿命。

The micro vehicle rear axle of car main gear box noise question became the worker matter of concern. In this paper, the micro vehicle rear axle of car main gear box noise performance present situation and the traditional assessment method are discussed, and the general BP neural network and the Levenberg-Marguardt algorithm are introduced in detail. Improves the BP neural network using the LM algorithm, at present is trains the neural network the quickest algorithm.

微车后桥主减速器噪声问题成为工作者所关注的问题，本文介绍了后桥主减速器噪声性能现状及传统评价方法，阐述了BP神经网络的一般算法，并详细介绍了Levenberg-Marguardt算法，利用LM算法来改进BP神经网络，目前是训练神经网络的最快算法。

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。