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- Nitrogen protection: Apply nitrogen to detect the oxygen amount contained in the machine online ensuring the safe operation. 氮气保护系统:采用氮气保护以保证机器在安全的环境下运行。
- We research on method of effective nitrogen protection in quick decomposition of straw in frigid area,and provide feasible approach. 研究了北方寒冷地区秸秆的快速腐解过程中有效氮保护的方法,寻找切实可行的途径。
- hydroxylamine nitrogen protection 羟胺氮保护
- 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。
- She subscribes to an animal protection society. 她捐款给一个动物保护协会。
- The lamp is full of gaseous nitrogen. 灯里充满了气体氮。
- We subscribe to an animal protection society. 我们定期捐款给一个动物保护基金会。
- Nitrogen forms about 78% of the earth's atmosphere. 氮约占地球大气的百分之七十八。
- The young in our society need careand protection. 我们社会的年轻人需要受到关怀和爱护。
- Nitrogen Protection's Effect on Solder Joint Appearance in Lead-free Reflow Soldering 氮气保护对无铅再流焊焊点外观质量的影响
- He was paying out half his profits as protection. 他把所得利润的一半交给歹徒作为保护费。
- They lobbied on the environmental protection issue. 他们就环境保护问题在议员中进行了游说。
- Numerical analysis on nitrogen protecting of TIG welding arc 钨极氮弧焊焊接电弧数值分析
- A thin jacket is a poor protection against cold. 一件单薄的夹克衫不足以御寒。
- The settlers banded together for protection. 移民联合起来保护自己。
- He's devoted his whole life to the protection of the rare animals. 他终生献身于珍稀动物的保护。
- A thin coat gives little protection against the cold. 一件薄上衣没有什么御寒作用。
- Keywords automatic suberification dense phase transportation nitrogen protection adipic acid; 自动成拴;密相输送;氮气保护;己二酸;
- Keywords Lead-free solder;Nitrogen protection;Pulling strength;Wicking;Remains oxygen level（ROL）; 无铅钎料;氮气保护;拉伸强度;芯吸;残余氧含量;
