2) follow focus attachment
跟随调焦装置
3) follow focus attachment
跟踪调焦装置
4) focusing device
调焦器件，聚焦装置
6) delayed coking unit
焦化装置
1.
The off-specification of secondary stress of coke drum overhead gas line in delayed coking unit is analyzed.
分析了焦化装置焦炭塔顶挥发线运行时二次应力超标现象的产生原因,由于挥发线管道自重很大,易产生一次应力超标。
2.
Corrosion in delayed coking unit is introduced, especially the corrosion of heating furnace is introduced and analyzed in detail.
介绍了焦化装置的腐蚀情况,特别是对加热炉空气预热器的腐蚀做了详细的分析,并提出了预防措施。
补充资料：跟踪
紧紧跟在后面（追赶、监视）：～追击。
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