If one of the gap that China export products mainly by crane still competitive price, quality and service is still short board.
如果说其中的差距，那就是目前中国起重机出口产品依然主要靠价格优势，质量和服务依然还是短板。
A crane dismantles another section of the fixed service structure on Launch Pad 39B at NASA's Kennedy Space Center in Florida.
佛罗里达周NASA肯尼迪航天中心，一个吊车正在拆卸39B号发射台固定支撑结构的另一部分。 拆除旋转服务结构（RSS）的工作仍在继续。
The main beam is the main hoist gantry crane force components, main beam directly affects the service life of machine.
主梁是葫芦门式起重机的主要受力部件，主梁的质量直接影响到整机的使用寿命。
The research shows that stress level of the crane structure is low and crane girder has large enough strength margin to assure the safety of using crane under extended service.
研究结果表明门机结构总体应力水平较低，严重受力件主梁具有较大的强度富裕度，可以保证超期服役的安全性。
Analysis of three-dimensional models under in-service wind speed, out-of-service wind speed and typhoon wind speed is carried out to study the wind-induced vibration response of gantry crane.
本文分别将龙门起重机三维模型放于工作状态风速、非工作状态风速、台风风速三种风速下进行风致振动响应分析。
Analysis of three-dimensional models under in-service wind speed, out-of-service wind speed and typhoon wind speed is carried out to study the wind-induced vibration response of gantry crane.
本文分别将龙门起重机三维模型放于工作状态风速、非工作状态风速、台风风速三种风速下进行风致振动响应分析。
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