1) transformed of supply water device
供水装置改造
3) plant modification
装置改造
1.
This paper introduces the current status of Yanshan ethylene glycol plant,demonstrates the necessity of plant modification from aspects of scale,technology and market.
从规模、技术、市场三方面论证了装置改造的必要性。
4) water supplying equipment
供水装置
1.
This article introduces a kind of water supplying equipment based on FRENIC5000G9S conversion controller,and its composition and working principle are presented as well.
介绍了一种基于FRENIC5000G9S变频调速器的供水装置,并给出了该供水装置的组成及工作原理。
5) PE installtation improvement
PE装置改造
6) rebuilding of secondary water supply system
二次供水改造
补充资料：封口装置——滚纹装置
封口装置——滚纹装置     | ||
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说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条