您要查找的是不是：
- To reveal the nitrogen purification mechanism in subsurface-flow constructed wetlands,nitrification and denitrification intensities were studied in reed,canna and unplanted wetlands respectively. 对芦苇、美人蕉、空白潜流型人工湿地中硝化、反硝化作用强度进行了对比研究。
- Air consists chiefly of nitrogen. 空气主要由氮气组成。
- Nitrogen forms most of the Earth's air. 地球上空气的大部分成分是氮气。
- The lamp is full of gaseous nitrogen. 灯里充满了气体氮。
- Nitrogen forms about 78% of the earth's atmosphere. 氮约占地球大气的百分之七十八。
- Reading a good book may bring purification to souls. 读一本好书可以带来心灵的净化。
- nitrogen purification 氮气纯化
- Liquid nitrogen purification 液氮净化
- Purification of water may be achieved by distillation. 水的净化可由蒸馏获得。
- Will you sunder nitrogen from air? 你能从空气中把氮气分离出来吗?
- This is a purification exercise. 这是一个净化练习。
- Do not attempt purification of NF3 via adsorption. 禁止试图通过吸附来净化NF3。
- Of, relating to, or used in a rite of purification. 涤罪仪式的涤罪仪式的、与涤罪仪式有关的或在涤罪仪式中使用的
- Nitrogen is the most commonly used gas. 氮气是最常用的气体。
- Sample gas tubes are flushed with nitrogen. 采气管得用氮气吹扫。
- The main reservoir of nitrogen is the atmosphere. 氮的主要蓄存库是大气层。
- What is the percentage of nitrogen in air? 空气中所含的氮的比例是多少?
- TaKaRa Agarose Gel DNA Purification Kit Ver. 本试剂盒是从琼脂糖中回收纯化DNA片段的试剂盒。
- Fast neutrons are also captured by nitrogen. 快中子也可以被氮吸收。
- Purification and dehumidification of air. 空气的净化与除湿。
