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Long, thin wall-section sleeves are difficult to manufacture and are prone to failure in operation.

长而薄的管壁难以加工而且顶出时容易失效。

When centrifuges in operation, working or near the work should be taken to the security protective measures.

在操作离心机或靠近离心机工作时应采取安全保护措施。

Rural commercial banks should position themselves differently from other commercial banks in operation and lay emphasis on supp...

农村商业银行应与其他商业银行进行差别化定位和差别化经营，立足于支持地方经济的发展，服务三农，服务中小企业和个体民营经济，服务优质客户。

Facilitators, so as to ensure that they can be in operation continuously.

调人员，而不是外来&专家&，能力建设的重点是当地协调员的能力，以保证他们持续发

This is the only Helldiver which is still flying, and though it wasn't one of the war's great aircraft, it's still terrific to see this type in operation.

这是唯一Helldiver仍然是飞行，虽然这不是一个战争的伟大飞机，它仍然可怕地看到这种类型的作业。

Through an analysis of the electromagnetic force on the electric heated rod, the authors work out the equation for calculating the electromagnetic force on unit area of the rod, and indicate that radial vibration of 100Hz will occur when the rod is in operation, which have little effect on the strength and sealing of the rod owing to minor amplitude.

电热杆的交流阻抗远大于导线的电阻，因此主要发热体为抽油杆，可快速有效地加热杆外的原油，而导线不会过热，有利于导线的绝缘与保护。通过对电热杆所受电磁力的分析，推导出了抽油杆内表面单位面积上所受电磁力的计算公式，从而得知电热杆工作时将产生沿径向向外的径向振动，振动频率为100Hz。但由于振幅较小，这种振动不会对抽油杆的强度和密封产生明显的不利影响。

BetaPlanner will complement Hadeeds existing SteelPlanner implementation in operation since 2000. This extension is executed within the framework of Hadees project to double its production capacity of flat steel products.

这个β方案将补充沙特钢铁公司现有的自2000年实施的钢铁计划，这个扩充计划将在沙特钢铁公司的工程结构下执行以使得钢板产量加倍。

For supracondylar fracture of humerus with obvious displacement,it is easy to make reduction,but the fixation and the maintenance of reduction is not easy; manual reduction with plaster or splint immobilization,though as the first-chosen method,has such shortcomings as infirm or loosening fixation of plaster or splint which may cause injury to blood vessels or nerves; open reduction may lead to further trauma to soft tissues and tissue adhesion,and to joint stiffness; the closed reduction with cross Kirschners wires under C-arm X-ray can avoid the above mentioned shortcomings and it is easy in operation.

移位明显的肱骨髁上骨折，复位容易，但固定及维持复位困难，手法复位石膏或夹板外固定虽是首选治疗方法，但石膏或夹板固定不牢固，易出现松动甚至可造成血管及神经损伤，而切开复位更易进一步造成软组织创伤，组织粘连，最终导致关节僵直功能障碍。本组C臂下闭合复位交叉克氏针治疗移位明显的肱骨髁上骨折避免了上述缺点，而且方法简单。肱骨髁上骨折；经皮克氏针固定；儿童；闭合复位

The method is easy in operation and reduces the biomedicine experiment cost as well.

该方法不但降低了生物实验的成本，而且易于操作实现，具有很强的应用价值。

Many variations of these units and many sizes are in operation at pres t.

现在 运转的有很多式样和不同大小的装置。

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％。