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- The non oxygen aromatization feature of methane on Co Mo/HZSM 5 catalyst was investigated. The effect of catayst surface structure on methane aromatization was characterized by using NH 3 TPD and XRD. 考察了Co-Mo/HZSM-5 催化剂的甲烷无氧芳构化性能, 并用NH3 -TPD和XRD方法表征了其表面结构对于甲烷芳构化的影响。
- Water contains hydrogen and oxygen. 水含有氢和氧。
- The two accidents happened on the selfsame day. 这两起意外事故发生在同一天。
- This non sequitur invalidates his argument. 他不根据前提推理因而论证无效。
- I have kept a reserve fund in case of accidents. 我已筹备了一笔准备基金以防不测。
- Barring accidents, I'll be there. 除非有意外事故,我会一定到场的。
- His working life was full of accidents. 他在一生的工作中遭遇了种种意料之外的事。
- Oxygen enters into many compound bodies. 氧是许多化合物的组成部分。
- Patience is a sine qua non for a good teacher. 做个优秀教师必不可少的条件是要有耐心。
- The diplomat was declared persona non grata. 这位外交家被宣布为不受欢迎的使节。
- A string of accidents happened at that corner. 在那个转角发生了一连串的事故。
- Instead of fewer accidents, there were more. 意外事故非但没有减少,反而增多了。
- Drinking is a principal cause of traffic accidents. 酗酒是交通事故的主要原因。
- Mars is too dry and poor in oxygen. 火星上面过于干燥,并且缺乏氧气。
- He is declared personal non grata and forced to leave the country. 他被宣布为不受欢迎的人而被迫离开该国。
- We have to provide for possible accidents. 我们要为可能发生的意外作些准备。
- Water is composed of hydrogen and oxygen. 水由氢和氧组成。
- Accidents often arise from carelessness. 事故往往起因于粗心。
- Fish take in oxygen through their gills. 鱼通过鳃摄取氧气。
- Barring accidents, we should arrive on time. 倘无意外,我们应准时到达。