The destructive reasons and countermeasures of bolting and shotcreting roadway are discussed.论述了锚喷巷道的破坏原因并提出了对策.This work is important for the electronic countermeasures technique.最后指出,这一工作对电子对抗技术具有重要的实际意义.Some counterme...
Bob prefers making original pieces rather than reproductions.鲍勃更喜欢创作原创作品，而不是制作复制品。Monochrome reproductions of natural daylight scenes are totally unnatural in appearance.天然光照射下的景物若以黑白方式来重现,看起来总感到不够自然.The walls are covere...