旋回

This is a natural motion and produces topspin on their shots.

这是一个自然的动作，并且能够在他们的回球上产生上旋。

This is a natural motion and p roduces topspin on their shots.

这是一个自然的动作，并且能够在他们的回球上生产上旋。

Forming mechanisms of the spin glass state and re-entrance phenomenon of B2 type FeAl compound were analyzed, and it was thought that different mechanisms existed in FeAl compounds with various ranges of compositions such as indirect exchange interaction, short-range ordering of partial atoms, and finite and infinite radical coexistence.

研究了不同成分的B2型FeAl化合物磁化强度与外场的关系、磁化强度与温度的关系、磁滞回线的特点，分析了B2型FeAl化合物自旋玻璃态、再进入现象的形成机制，认为FeAl化合物不同成分范围内应存在不同机制如间接交换作用、部分原子短程有序、有限、无限原子集团作用并存。

Swing check valves should be used one kind of screws or bolts to connect the valve cap for inspection and repair of disc and seat.

旋启式止回阀应该选用一种螺丝或螺栓连接的阀帽，以便检查和修理阀瓣和阀座。

Removable seat preference should be given, because they are easy maintenance, and easy to replace the valve seals Swing check valves should be used one kind of screws or bolts to connect the valve cap for inspection and repair of disc and seat.

可拆卸的阀座应优先选用，因为它们容易维修，而且便于更换阀中的密封件旋启式止回阀应该选用一种螺丝或螺栓连接的阀帽，以便检查和修理阀瓣和阀座。

Double Flanged Style Valves bolt up similar to a bolted cap swing check or gate valve.

双法兰类型阀门采用螺栓紧固，类似于螺栓阀帽旋启式止回阀或闸阀。

Enterprise specializing in pumps, valves, pipes, pipe fittings, corrosion-resistant equipment, mechanical equipment, steel-lined plastic·úmaterials and various types of product development, design, production and sales of main products have fluoroplastics pump, steel-lined PTFE pump , liquid pumps, self-priming pump, magnetic pump, centrifugal pump, stainless steel pump, fluorine plastic lined plug valves, butterfly valve, ball valve, valve, check valve, valve, gate valve, pipe fittings and steel equipment ten Level of stress, some more than 1120 kinds of model specifications.

企业专门从事水泵、阀门、管道、管件、防腐设备、机械设备、钢衬氟塑料及全塑各类产品的研发、设计、生产和销售，主要产品有氟塑料泵、钢衬四氟泵、液下泵、自吸泵、磁力泵、离心泵、不锈钢泵，氟塑料衬里旋塞阀、蝶阀、球阀、截止阀、止回阀、隔膜阀、闸阀、管道件及钢塑设备十个压力等级，约1120多种型号、规格。

CALCINED mention is made of pure hand-made patterns CALCINED Steel Series (including spin welding stria stria large feather striaíleather, etc.), pure fire prides·¨, high hardness, good resilience, Copper, Iron and has a high relief carving hollowingmistake incised inlaid gold-plate a number of techniques such as, grinding process more than a dozen sub-processes , nuanced, scabbard production at light onto Wood Lacquer painted turtles gilding kits for rhino skin enamelled cow leather sheepskin number of processes, the end of a series of flow, the system can reflect and meet the Product traditional swords level.

煅造提现纯手工煅造花纹钢系列包括旋焊纹羽毛纹大马丝革纹等），粹火引以古法，硬度高，回弹力好，雕刻铜铁有高浮雕镂空阴刻金银铜错镏金镶嵌等多项技艺，研磨过程也分十几道工序，细致入微，刀鞘的制作分木工漆艺推光描绘贴金箔包海龟皮作犀皮漆包牛羊皮多项工序，一系列流程结束，所制产品能反映和达到传统刀剑的水平。

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