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for subject
Drilling
containing
支承
|
all forms
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in specified order only
Chinese
English
井架
支承
座
mast pedestal
按日支付承包费
contract day rate payment
支承
tower
支承
pole
支承
bear
支承
圈
backup ring
支承
垫圈
back-up washer
井下马达的
支承
外壳
bearing package
支承
环
step ring
支承
节
bearing block
轴尖
支承
pivot bearing
轴颈
支承
journal rest
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