This paper briefly introduces the dehydrogen process in urea plant of Taxinan Fertilizer Plant, process modification for adopting domestic DH-2 catalyst instead of imported catalyst.
简要介绍了塔西南化肥厂尿素原料气脱氢系统工艺,改用国产DH-2催化剂对系统进行的改进及实际应用情况。
Under specific enviromental information, neuroendocrine cells produce and secrete diapause hormone ( DH).
在特定的环境条件信息下,神经分泌细胞产生和分泌滞育激素(DH)。
Diapause hormone ( DH), which is secreted by the suboesophageal ganglion of the silkworm in pupae period, plays a key role in the process of the embryo diapause.
在蛹期由咽下神经节合成和分泌的滞育激素,在其滞育过程中起到了决定性作用。
简答网 · 英语词汇
简答网 · 双语娱乐资讯