With the risk of disappearing for the rock paintings considering long-term exposure in Helan Mountain, the freeze-thaw(F......

研制一种新型的、适用于中、小动物的迅速减压舱。通过１３８次空载实验和３６例动物（家兔）实验发现：该装置的减成都市工和减压时间可调，减压幅度......