概况

This disquisition is about the general situation of the stuff load and distribution equipment on the blast furnace bell-less top, and expatiate on the design characteristics and the problems of the vital equipment such as sealed valve, flow control valve and stuff distribution facility in the two advanced type bell-less top equipment (parallel hopper type and series hopper type) in the world.

本文介绍了高炉无料钟炉顶装料布料装置的概况，重点阐述了世界上最先进的两种无钟炉顶设备(并列料罐式无钟炉顶装料布料装置和串列料罐式无钟炉顶装料布料装置)中的密封阀、料流调节阀和布料器等关键设备的设计特点及问题探讨。

Reviews the removal methods of formaldehyde, including physical adsorption method , chemical method and biological method.

介绍了物理吸附法、化学法和生物法等去除甲醛的方法的研究概况，指出了今后的研究方向。

And, based upon the introduction of constitution and reinforcement of bridge pier cap the span adjustment method combined with bridge pier cap and beam seat is proposed.

以神朔复线两座大桥工程为例，介绍了施工图设计概况，阐述了加垫梁墩帽的构造及配筋，提出了采用桥墩墩帽加垫梁调整孔跨的优缺点及其适用条

In recent years, a new gas burner of low voltage and low caloric value was successfully developed.

简要分析了国内普遍使用的非预混式气体燃烧器的技术概况，着重介绍了近几年研制成功的新型低压、低热值煤气燃烧器的结构特征、技术特点及应用效果。

This requirement may be satisfied by the submission of information such as the following: name (generic name, chemical name, code number); Chemical Abstracts Service number if available; description (e.g., appearance, color, physical state); molecular formula and molecular weight; structural formula (including ionic state if applicable); stereochemistry identifying chiral centers, cis-trans isomerism, etc.

该要求可以通过提供下述信息来满足：名称（通用名、化学名、编码等）、化学摘要服务编码、性状描述（如：外观、颜色、物理状态）、分子式和分子重量、结构式、立体化学（找出手性中心、顺式反式异性等）、对映结构体比率（如：外消旋物、规定的异构体、对映异构物和固态形式的混合物）、溶解度概况、分配系数、溶液 pH 值、解离常数、熔点或沸点、折射率、比重。

The development of natural gas engine and combustion systems was summarized.

介绍了天然气发动机及其燃烧系统的发展概况。

The general situation of hydraulic AGC techniques for copper cold rolling mill s is introduced, the direct measurement and closed loop control for mill gap are simply described, the natural rigidity of mill and the equivalent rigidity in gap control are analysed and compared, and at last the realization of a gap direct measurement AGC system is simply described as an example.

介绍了铜带冷轧机液压AGC技术的概况；简述了轧机辊缝直接测量和闭环控制，并对轧机自然刚度和辊缝控制的等效刚度作了分析比较；最后，作为实例，简要说明了一个辊缝直接测量AGC系统的实现。

The paper chiefly introduced the specification and the characteristic of the crab pot, current situation about crab pot fishery, the principal fishing ground, fishing season and the composition of the catches.

着重介绍了浙江蟹笼渔业渔具的规格及特点，近年来浙江蟹笼渔业的发展概况，蟹笼作业主要生产渔场、渔期及渔获物组成。

The application of bowl-button steel scaffold on the construction of cast-in-place continuous beam in Houyan Cross-bridge of Shenda Highway, its working process and main management points were introduced.

介绍了碗扣式钢管脚支架在沈大高速公路后盐立交桥连续箱梁施工中的应用概况及碗扣式钢管脚支架的施工工艺和控制要点。

The paper analyzes briefly the development state of the diamond ultraprecision turning tool technology.

分析了国内外金刚石超精密切削刀具技术的发展概况，并从金刚石超精密切削刀具的精度控制、金刚石超精密切削刀具的选择以及金刚石超精密切削刀具的制造技术等方面进行了探讨。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。