The picture shows six of the eight planets in the solar system.这幅图标示了太阳系八大行星中的6颗。...careful observation of the movement of the planets...对行星运动的仔细观测There was no gainsaying the astronomer's knowledge about the planets...
Under the room temperature, PTMEG has the water absorptivity.在室温下, PTMEG都具有吸水性.Total absorptivity can be up to 98 % using second - order absorption - oxidation process.采用二级吸收 — 氧化流程,总的吸收率可达98%以上.The molar absorptivity of...