空间网格结构损伤探测技术是目前结构工程领域研究的热点和难点。
Damage detection in spatial lattice structures is an important subject in the present structural engineering field.
左边是银河系的目前结构,显示其两条主螺旋臂,右边是较早的银河系图像,有四条主螺旋臂。
New infrared images of the Milky Way show just two major spiral arms, Scutum-Centaus and Perseus, along with a newly discovered arm called Far 3kpc Arm.
但是,目前结构的损伤检测与诊断研究多集中在桥梁、高层等结构上,针对大跨度空间结构损伤检测与诊断的研究很少。
But, presently the research on damage detection and diagnosis of structure focus on bridge and tier building, and the research on large space structures are few.
That's the term structure as of now on the chart.
目前的利率期限结构
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