There were a lot of guest houses which were very tatty.有许多小旅馆都又脏又乱。tatty ornaments俗丽的装饰品His friends used to tease him about his tatty clothes.他的朋友过去常常笑话他破旧的衣服....a very tatty old bathrobe.破旧的浴衣They seemed unreal and kind...
These apertures restrict the amount of light that can reach the detector.这些光阑将会限制到达探测器的光线的总量.Note as well that the above considerations apply when all the apertures are illuminated completely coherently.还要注意,当所有的孔都以完全相干的...
The water was reacting with the ferrous iron in the tank.水与水箱中的铁质产生化学反应.Nodules contain a mixture of ferrous and ferrous - oxy leghemoglobin.根瘤含有亚铁和亚铁一氧化豆血红蛋白的混合物.Ferrous metals , timber, and pulp seem to offer the main ...
Protons are nearly 2000 times as heavy as electrons.质子的质量几乎是电子的2,000倍。The neutrons and protons form the core of the atom.中子和质子构成了原子核.Electrons are negatively charged with electricity, protons are positively charged.电子是带负...