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- Determination of trace oxygen in gases--Phosphor chemiluminescence method GB/T14852-1993气体中微量氧的测定黄磷发光法
- Water contains hydrogen and oxygen. 水含有氢和氧。
- Determination of trace oxygen contained in liquid chlorine by traditional gas absorption method 以传统气体吸收法测定液氯中的微量氧
- Oxygen enters into many compound bodies. 氧是许多化合物的组成部分。
- I can't trace that letter you sent me. 我找不到你寄给我的那封信。
- He spoke without a trace of emotion. 他说话时毫不动感情。
- Did the police find any trace of the murderer? 警方找到凶手的行踪了吗？
- They failed to find any trace of the runaways. 他们未能找到逃跑者的任何踪迹。
- There was barely a trace of salt in the soup. 汤里简直一点盐也没有放。
- The post office tried to trace the lost letter. 邮局设法查出那封丢失的信。
- Mars is too dry and poor in oxygen. 火星上面过于干燥，并且缺乏氧气。
- The kids are learning to trace the letter. 孩子们学描字母。
- Water is composed of hydrogen and oxygen. 水由氢和氧组成。
- He always spoke with a trace of sarcasm. 他说话总带着一丝讽刺。
- Fish take in oxygen through their gills. 鱼通过鳃摄取氧气。
- The powerhouse was trace out accurately later on a large scale map. 后来发电站被精确地描画在大比例地图上。
- The oxygen react vigorously with the impurity in the iron. 氧气与铁中的杂质发生剧烈的化学反应。
- A faint or fleeting indication; a trace. 模糊的暗示模糊的或一闪即逝的暗示; 迹象
- The oxygen workshop caught fire and set off a chain of explosions. 氧气车间着了火，引起了一连串的爆炸。
- The country woke from her trace of two hundred years. 这个国家在沉睡了200年之后觉醒过来了。
