1)  isolated
封闭化
1.
Solving scheme of isolated management system for the plant was adopted to emphasize safety management of entering and exiting of workers and vehicles and to ensure production safety and body safety of workers is briefly presente
简述了为加强对石化生产厂区进出作业人员、车辆的安全管理 ,确保安全生产和作业人员的生命安全而实施的生产厂区封闭化管理的系统解决方
2)  pre-emergence
封闭化除
1.
IR5878 is a new pre-emergence herbicide for the control of Cyperus difformis.
IR5878用于移栽稻田杂草土壤封闭化除,对水稻安全,对莲子草、异形莎草有很好的防效,也能防治稗草,且有效期长,是很好的一次性除草剂,推荐商品剂量为120 g/hm2。
3)  enclosure management system
封闭化管理系统
4)  closed chemical reflux
封闭化学回流
5)  sealing
封闭
1.
A pulse current sealing method for an anodic film on aluminum alloy;
铝合金阳极氧化膜双向脉冲封闭工艺
2.
Investigations of the Synergism between Cerium Salt and Lithium Salt in the Sealing of Anodized Film of Aluminum;
铈、锂盐对铝阳极氧化膜的协同封闭作用
3.
Techniques used for sealing of anodized aluminumand aluminum alloys;
铝及铝合金阳极氧化膜的封闭技术
6)  blocking
封闭
1.
Blocking and Unblocking Reaction of TDI Prepolymer;
TDI预聚体封闭与解封闭反应研究
2.
Influence of the blocking antibodies on paternal T lymphocyte differentiation antigens (CD3,CD4 and CD8) in women with pregnancy induced hypertension;
妊高征患者封闭抗体对配偶T淋巴细胞分化抗原CD3、CD4、CD8的影响
3.
Preparation of Blocking Isocyanate and Study on the Unblocking;
封闭异氰酸酯的制备及其解封闭研究
参考词条
补充资料：封闭化学回流
分子式：
CAS号：

性质：将化学回流反应副产品作特殊处理后变成回流所需的化学试剂实现回流的方法。NaHSO3-SO2体系富集34S时，用电渗析方法再生化学回流试剂成功地实现封闭化学回流。以NaHSO3+H2SO4→NaHSO4+SO2↑+H2O，NaHSO4+NaOH→Na2SO4+H2O进行底回流；以SO2+NaOH→NaHSO3进行顶回流，反应副产物Na2SO4输入电渗析器，在阴极发生2Na++2e-+2HOH→2Na++2OH-+H2↑反应。在阳极发生SO4=+HOH→H2SO4+2e-+1/2O2↑反应，实现同位素多级交换过程。

说明：补充资料仅用于学习参考，请勿用于其它任何用途。