起重机

Tower cranes can rise 150 feet in the air and lift up to 19 tons.

塔式起重机可以上升150英尺的高空，并抬起至19吨。

Imagine that a commercial airline pilot had the same training as a certified crane operator.

想象一下一个商业航空公司飞行员和一个认证的起重机操作员有相同的训练。

The main reflector weighs approximately 125 metric tons so placing it on the alidade requires a large crane.

主反射镜的重量约125吨，所以把它列入照准需要大型起重机。

For example:– at 30 m distance an audible signal is given;– at 20 m distance the crane speed is decreased;– at 5 m distance the final stop signal is given.

–在30米处发出可听信号；–在20米处起重机减速；–在最后5米处发出停车信号。

Forexample:– at 30 m distance an audible signal is given;– at 20 m distance the crane speed is decreased;– at 5 m distance the final stop signal is given.

–在30米处发出可听信号；–在20米处起重机减速；–在最后5米处发出停车信号。

For example, we can say quite a lot about the history of the Crane, Red Kite, White-tailed Eagle and great Auk.

例如，我们可以说，不少有关的起重机，红风筝，白尾海雕，大雀的历史。

The finite element analysis of reel structure of aut omobile crane is studied.

对汽车起重机卷筒结构的有限元分析方法进行了研究。

Deep groove ball bearing is a kind of crane accessories.

深沟球轴承是起重机的一种配件。

As the loading increases count of hit and AE energy increases markedly. This proves that safety assessment of crane beam by AET is fully creditable. It can accurately evaluate the critical degree of crack and the safety reliability of the crane beam.

随着载荷的增大，撞击计数和声发射能量都明显增大，这证明用声发射技术进行起重机梁的安全评价是完全可靠的，它可准确地评价裂纹的危险级别和起重机梁的安全可靠性。

This paper combined the actual situation with the design request of the dockyard, based on the WINCC and Kingview configuration software, utilized the FieldBus technology, designed and developed the Remote Monitoring system for shipbuilding crane; finally, realized the system in dockyard of Chekiang province.

本论文结合船厂的实际情况及起重机的设计要求，基于WINCC和组态王等组态软件，利用现场总线和OPC技术，设计并且开发了船厂特种起重机远程监控系统，该系统已在浙江等地造船厂得以应用。

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％。