很久以前, 我们就知道行星的周期运动.Long long ago, we knew the periodic motion of a planet.这个行星的表面布满了小块陨石留下的撞击坑.Small meteorites have left impact craters all over the planet's surface.新发现的这个天体具有不同于任何其他行星的运行轨道。The newly discovered wo...
差示扫描量热法检测N- 苯基-β-萘胺纯度合成标准不确定度为0.025%.The combined standard uncertainty of HPLC is 0.454 % , and DSC is 0.025 %.用这台光学仪器, 我们可以分辨出0.025微米的微波.With this Optical Equipment , we are able to distinguish 0.025 micron microwave.在实...
Stir the batter every now and then to keep it from separating.不时搅动面糊,防止其成分散开。I like to smoke a big cigar every now and then.我喜欢不时地抽一支大雪茄.I see him every now and then, but not often.我偶尔看见他, 但不经常看见他....