Nuclear physics has provided extensive experimental support for the mass - energy equivalence.原子核物理学已经为质能等效性提供了广泛的实验证据.The midpoint and equivalence point for carbonic acid are much higher.碳酸滴定中点和等量点也高得多....the equivalenc...
Standing in the watchtower, we admired the surrounding scenes.我们站在碉楼上, 欣赏四周的景色.The watchtower followed the aircraft by radar.了望塔通过雷达追踪这架飞机的飞行.If it isn't, why do they renovate the watchtower?要不然, 为什么他们要修复了望塔?...