To seize the space debris, the mechanical arm need to lock the concrete goal, but in space, debris is changing position.
要抓住太空碎片，这只机械手臂需要锁定具体目标，但在太空中，碎片是不断变换位置的。
The paper presents various temperature control measures taken in ground concrete placement at permanent lock of Three Gorges Project during summer construction of 1999 .
介绍了三峡工程永久船闸地面混凝土在1999年夏季施工中所进行的各种温控措施。
In the paper, the reinforced concrete FEM is used to analyze the causes and detriment of cracks in a lock, and improvement measures of the structure.
采用钢筋混凝土有限元法，分析某船闸的裂缝成因、危害和加固措施。
So the main component concrete of the ship lock should have relatively high scour resistance and cracking resistance to improve the ship lock's safety and durability.
因此要求船闸主要部位混凝土应具有较高的抗冲耐磨和抗裂的性能以提高船闸的耐久性能。
The article details material selection, grouting technology and quality inspection in the treatment of defects in concrete of the permanent ship lock of Three Gorges.
针对三峡永久船闸工程混凝土缺陷的类型，介绍了缺陷治理选用的材料，并对灌浆工艺、施工注意要点、灌浆质量检验作了详细介绍。
In the case that the pilot bore of the lock gate shaft was fully blocked by the rock mass, anchors have been combined with concrete to ensure the safety of subsequent side clearing and lining.
在闸门井导井被岩体完全封堵的情况下，为确保后期刷帮及衬砌安全，采用锚杆和砼结合对闸门井进行锁口。
Temperature control measures for side wall concrete construction in the sixth lock head of the permanent navigation locks at the Three Gorges Project during hot season are briefly given in the paper.
简述了三峡工程永久船闸六闸首边墙混凝土高温季节施工的温控措施。
After running for 30 years, carbonization, cracks and corrosion of steel have occurred on the surface of the concrete of Sanhe navigation lock which was built in 1970.
三河船闸建于1970年，经过三十多年的运行，混凝土表面出现碳化、裂缝和钢筋外露锈蚀。
After running for 30 years, carbonization, cracks and corrosion of steel have occurred on the surface of the concrete of Sanhe navigation lock which was built in 1970.
三河船闸建于1970年，经过三十多年的运行，混凝土表面出现碳化、裂缝和钢筋外露锈蚀。
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