... back cut-off power recorder 反向截止功率记录仪 back cutting 回挖 back cylinder cover 后缸盖 ...
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短语
回转式蒸汽挖土机
revolving steam shovel
回转挖掘机
[机]
revolving shovel
明挖回填法
cut and cover method
;
cut-and-cover method
回填料挖除
removal of backfill
回转式挖掘机
swing excavator