Behind the pillboxes were more lines of barbed wire and more trenches and dugouts reinforced with concrete to withstand artillery bombardment.
在这些机枪碉堡后方是更多的铁丝网、更多的壕沟，以及使用混凝土进行强化并能承受炮火轰击的掩蔽部。
2
To ensure uniform distribution of light, wire joints to be firm, and LED lamp to be reinforced with silica gel to prevent falling off.
要确保灯分布均匀，线接头要牢固，且LED灯要用硅胶加固，防止脱落。
3
The tensile strength of the reinforced heavy six Angle net is higher than that of the common mesh, and the diameter of the wire is not smaller than the diameter of the side wire.