derrick是什么意思

双语用例

• In modern times there is no above-ground trace left of these derricks.

• Much of the landscape remains scarred with rusting oil derricks.

• Cargo capacity was 150 tons, in a single forward hold that was served by two 34-foot derricks that could lift four tons of cargo.

• Collapsable crane derricks were fitted to access the cargo space.

• Numerous wooden oil derricks were built on the beach, and on piers stretching into the ocean.

• Oil derricks sprouted on the hilltop within easy view of the harbor, on narrow town lots intended originally for houses.

• Their cargo-handling gear comprised six derricks, two of 35t and four of 25t.

• Steam derricks and snagboats continued to be used until the 1960s and a few survivors soldiered on.