球管

Methods: 60 freshly extracted , single-rooted premolars were randomly divided into two experimental groups (cinnamic aldehyde, gallnut decoction) and four control group (FC group, calcium hydroxide mixed with propylene glycol group, negative the control group and positive control group),.

标本牙去除牙冠部及根尖部，留取6mm长牙根，50颗牙建立粪肠球菌根管感染模型后，20颗牙根管内分别放置桂皮醛、五倍子水煎剂，另30颗感染根管放置FC、氢氧化钙丙二醇糊剂和生理盐水。

I is the modernization of private enterprises, a leading national institution-building, with first-class domestic advanced nodular centrifugal casting technology and the domestic rare new equipment, major equipment hot air cupola, molding machine, rotary Taiwan machine, tube cutting machine, cutting machine and hydraulic press, etc. The main products such as centrifugal cast iron pipe Ductile Iron Castings, an annual production capacity of 15,000 tons, the companys products by the most advanced laboratory and testing equipment inspected before sale, the company produces centrifugal ductile iron parts with the main strength, high elongation, engage in corrosion, anti-earthquake performance excellence.

公司是现代化民营企业，体制建设领先全国，拥有国内先进一流的离心球墨铸造技术和国内少有的新型设备，主要设备有热风冲天炉、造型机、旋台机、掏管机、切割机和水压机等，主要产品为铸铁管等各种离心球墨铸铁件，年生产能力为15000吨，本公司产品经国内最先进的化验和检测设备检验合格，然后上市销售，本公司生产的离心球墨铸铁件具有主强度，高延伸率，搞腐蚀，抗地震等优异性能。

The flow-field around a hemisphere and a flat-nosed cylinder in the shock tube is simulated numerically by using non-equilibrium Navier-Stokes equations with an air chemical model of 5 species 17 reactions, and the catalytic rate constant of surface materials such as Pt, SIC:, Ni and a flight vehicle materials is determined by using the heat transfer rate of testing in the shock tube and the distribution of heat transfer rate along with the catalytic rate constants.

用5组分17个化学反应Durm-Kang空气化学模型和轴对称热化学非平衡Navier-Stokes方程，对激波管中球头和平头圆柱模型绕流流场进行了数值模拟，给出了驻点热流随催化速率常数变化的分布，并根据激波管实验测量的热流值确定了表面材料Pt、SiO2、Ni和某种飞船材料的催化速率常数，建立了数值分析高焓流动边界层催化特性的软件。

When the condensation of water into the valve cavity, the Deputy of the float valve level with the increase in float steam into pore closure.

当凝结水进入下阀腔，副阀的浮球随液位上升，浮球封闭进汽管孔。

Products have: ball valve, water Tsui, floating ball valve, Angle Valves, check valve, globe valve, pipe joint, floor drain, sanitary ware plumbing equipment.

生产的产品有：球阀、水咀、浮球阀、角阀、止回阀、截止阀、管接头、地漏、水暖洁具器材等。

Gusset plate connections to slotted tubes is one type of the composite joint configurations in tubular structures. It can meets in practice. This connection take place of tubular joints and welded hollow spherical joints in some special situation.

管板节点是管结构中一种混合节点形式，在实际工程中发挥了在特殊场合代替相贯节点、焊接空心球节点的作用。

The top of the ball is 3coated in ink from the ink 4supply, and the bottom of the ball spreads the ink onto paper as one writes.

球的顶端被墨水管中的墨水覆盖，球的底部则在写字时把墨水涂在纸上。

The cut-off valve with pilot valve without hand wheel, stem and lift nut inside will guide block and guide slot Butterfly Valves to guide sleeve, the disc-shaped disc to disc type bowl shape, and holes in the bottom of the flap valve to open, the valve cover of the original valve stem hole to hole diversion, because of increased pressure ring, ring, and the valve flap to class mortar, so that the flow passage separated the upper chamber cavity, external cavity, cavity, in the cavity and The external cavity increases with draft tube and stainless steel manual ball valve, flap valve in the cover plate and the center of the end of installing the spring, the upper flap valve install compression seal of the pressure ring, outside the cavity of the wall to open a Drainage holes.

带先导球阀的截止阀无手轮、阀杆和内升降螺母，将导向块与导向槽改为导向套，将盘形阀瓣改为类钵体形阀瓣，并在底部开阀瓣孔，电动蝶阀将阀盖原阀杆孔改为导流孔，因增加压环、密封圈和将阀瓣改为类钵体，使上通流腔分隔为上腔、外腔、内腔，在上腔与外腔的外部加设有导流管与不锈钢手动球阀，在盖板与阀瓣底的中心部加设弹簧，阀瓣上部加设压紧密封圈的压环，在外腔的壁上开有放水孔。

Domestic Tools: Shanghai Star tools; Shanghai China United jack; Shandong Wendeng tools; Shandong Yanggu yang heavy long sleeve series; Shandong long arrow cutting film series; Shandong greenwood tools; Shandong Penglai national pipeline tools; Ningbo Tong Chi tools; Zhejiang Yuhuan 'jade works, hydraulic tools;¨Dalian machine ping the mouth with forceps; Dalian watttools; Xuzhou Hua Shi pipe clamp; Xuzhou golden torch; Hong Kong-day wood planer wells; Hebei Xingtai Steel Works file; Tianjin, sparks' welding clamp series; Tianjin Jing-long lifting tool; Tianjin Dawnrays instrumentation; Tianjin mighty Tools; Tianjin Pipe clamp Kelly; Tianjin anchor balers; Tianjin Golden Anchor glue gun; Yangzhou Yinxin oil gun oiling device; zaoqiang·brazing; Yongjia helmets; Tangshan shovel; Yang-Ho; hoe; Guangdong 'gold, mining of the cloth; insurance products and various building materials supplies tools.

国产工具：上海星光工具；上海中联千斤顶；山东文登工具；山东阳谷阳龙重型套筒系列；山东龙箭切割片系列；山东绿林工具；山东蓬莱国力管道工具；宁波通驰工具；浙江玉环'玉工，液压工具；大连台钳与机用平口钳；大连瓦木工具；徐州华石管钳；苏州金球喷灯；香港天木井刨床；邢台冀工钢锉；天津，火花'电焊钳系列；天津京久起重工具；天津东瑞仪表；天津雄师工量具；天津凯利管钳；天津铁锚打包机；天津金锚胶枪；扬州银鑫油枪注油器；枣强风镐钎；永嘉安全帽；唐山铁锨；洋镐；锄头；广东'金牌，采条布；劳保用品土产及各种建材工具。

From the viewpoint of energy efficiency of cooling towers and underground thermal balance, recommends the operating mode by setting the average water temperature of buried exchangers or by setting the difference between the water temperature of buried exchangers and the wet-bulb temperature of environment.

从冷却塔运行节能及地下冷热平衡的角度考虑，建议采用设定地埋管换热器流体平均温度或设定地理管换热器流体温度与环境湿球温度的差值的控制策略。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。