中杆

RESULTS Hp can grow in liquid media in room temperature, and 3 out of 18 strains of coccoid Hp reverted to bacterial.

结果 Hp可在室温液体中繁殖，18株中观察到3株球形体Hp在室温下的返祖，除常见球形变外的Hp杆状弯曲、长杆状、短杆状、长丝体、巨球体、丝球体、原生质体及细小"S"和弧形变异。

A set of formula of conical surface double enveloping worm gearing had been derived and its figures,posi- tion and distribution had been depicted by graphs.

推导了锥面二次包络圆柱蜗杆传动过程中的啮合方程和主要啮合性能指标方程，以图表表示出在不同参数下其接触线、啮合界限线、根切界限线的分布图，对此种蜗杆副在砂轮的不同半径下的啮合特性进行了比较，为这类蜗杆传动中蜗轮滚刀的设计制造提供了理论基础。

With the screw rotation and meshing, the sealed space in the pump suction side evolving to inhalation chamber inclose one of the liquid, and from inhalation of room along the screw axis moved continuously push from client, will be closed in the space continuous discharge of liquid, like a nut in the thread when he was constantly turning the situation to move forward, this is the basic working principle of the screw pump.

随着螺杆的转动和啮合，这些密封空间在泵的吸入端不断形成，将吸入室中的液体封入其中，并自吸入室沿螺杆轴向连续地推移至排出端，将封闭在各空间中的液体不断排出，犹如一螺母在螺纹回转时被不断向前推进的情形那样，这就是螺杆泵的基本工作原理。

Huaqing Group is specialized in electronic and mechanical application of high-tech enterprises, the main products are electricity motorcycle devices, including Gao Yabao, ignition, regulators, flashlight, relays, the release of resistance, motorcycle plating Pieces, including brake rod, the handle, and change file-under par start, tail planes, bumper, the former bracket, the middle folder, and so on, the electric motor vehicle with brush, brushless motor, in shoring planes, handle, as well as通用汽油机ignition systems, mainly for the Jincheng, Qianjiang, in Shanghai, Longxin, Dayang, in the margin, Jin Hao, such as motorcycle factory整机matching.

华青集团是专业从事电子及机械技术应用的高新技术企业，目前的主要产品有摩托车用电器件，包括高压包、点火器、稳压器、闪光器、继电器、释放电阻等，摩托车用电镀件，包括刹车杆、把手、变档杆、起动杆、尾架、保险杠、前托架、中间文件夹等，电动车用有刷电机、无刷电机、中撑架、把手等，以及通用汽油机点火系统等，目前主要为金城、钱江、宗申、隆鑫、大阳、中裕、豪进等摩托车整机厂配套。

It is considered that fatigue crack is early produced on drill pipes, because the vibration load of drilling tools in air drilling is more severe than that in mud drilling. Fatigue cracks easily occur under alternating vibration. Because the current wellhead detecting instruments can not be used to reflect the change of pump pressure produced after drill pipe piercement timely and accurately, effective measures can not be taken in time to prevent the expansion of fatigue cracks. As a result, drill pipe fracture accidents occur.

失效分析表明，钻杆属于早期疲劳断裂，断裂主要原因是在空气钻井过程中钻具受到的震动载荷远大于钻井液钻井过程中的震动载荷，在交变的震动载荷作用下，钻具容易产生疲劳裂纹；由于现有的井口检测仪表不能精确及时反映钻杆刺穿之后产生的泵压变化，无法及时采取预防措施，疲劳裂纹不断扩展，最终导致了钻杆断裂失效。

It is considered that fatigue crack is early produced on drill pipes, because the vibration load of drilling tools in air drilling is more severe than in mud drilling. Fatigue cracks easily occur under alternating vibration. Because the current wellhead detecting instruments can not be used to reflect the change of pump pressure produced after drill pipe piercement timely and accurately, effective measures can not be taken in time to prevent the expansion of fatigue cracks. As a result, drill pipe fracture accidents occur.

失效分析表明，钻杆属于早期疲劳断裂，断裂主要原因是在空气钻井过程中钻具受到的震动载荷远大于钻井液钻井过程中的震动载荷，在交变的震动载荷作用下，钻具容易产生疲劳裂纹；由于现有的井口检测仪表不能精确及时反映钻杆刺穿之后产生的泵压变化，无法及时采取预防措施，疲劳裂纹不断扩展，最终导致了钻杆断裂失效。

With the rotating screw and mesh, these seals in the pump suction space evolving, the suction chamber in which liquid enclosure and along the screw axis from the inhalation of room to move continuously push exhaust side, will be closed in the space been discharged in the liquid, like a nut when the screw rotation continued to move forward is the case, this is the basic principle of the screw pump.

随着螺杆的转动和啮合，这些密封空间在泵的吸入端不断形成，将吸入室中的液体封入其中，并自吸入室沿螺杆轴向连续地推移至排出端，将封闭在各空间中的液体不断排出，犹如一螺母在螺纹回转时被不断向前推进的情形那样，这就是螺杆泵的基本工作原理。

Central China in the design and manufacture of worm reducer there is a process to a large extent the shortcomings, as revealed by the paper, important issues such as: cutting the root of the tooth; Worm rough the correct design of the worm check.

国内在设计制造环面蜗轮蜗杆减速器过程中存在着很大程度上的缺点，正如论文中揭示的那样，重要的问题如：轮齿的根切；蜗杆毛坯的正确设计；蜗轮蜗杆的校核。

Central China in the design and manufacture of worm reducer there is a process to a large extent the shortcomings, as revealed by the paper, important issues such as: cutting the root of the tooth; http://www.16sheji8.cnWorm rough the correct design of the worm check.

国内在设计制造环面蜗轮蜗杆减速器过程中存在着很大程度上的缺点，正如论文中揭示的那样，重要的问题如：轮齿的根切；蜗杆毛坯的正确设计；蜗轮蜗杆的校核。

Central China in the design and manufacture of worm reducer there is a process to a large extent the shortcomings, as revealed by the paper, important issues such as: cutting the root of the tooth; http://www.16sheji8.cn Worm rough the correct design of the worm check.

国内在设计制造环面蜗轮蜗杆减速器过程中存在着很大程度上的缺点，正如论文中揭示的那样，重要的问题如：轮齿的根切；蜗杆毛坯的正确设计；蜗轮蜗杆的校核。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。