当桥梁通道关闭时，两个油压缓冲装置提供除了弹性轴承外的支撑。
When closing the bridge two Oleo buffers are provided in addition to the elastomeric bearings.
石油压裂支撑剂的研制是一项复杂有难度的技术，受到很多因素的影响。
The development of oil fracturing proppant is an intricate task affected by many factors.
石油压裂支撑剂的研制是一项复杂有难度的技术，受到很多因素的影响。
The development of oil fracturing proppant is an intricate task affected by many factors.
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