christmas-tree assembly 采油树总成 ; 圣诞树装置

X-mas tree assembly 采油树总成

subsea christmas tree assembly 水下采油树总成

chart-tree assembly model 图树装配模型

assembly tree 装配树

State- Space Assembly Sequence Tree 叫做阶层组装次序树

tree of assembly 装配结构树

assembly-tree 装配树

the assembly tree 装配树

assembly tree view 装配树视图