pipe slacking block钻杆: bull rod; bar; rod; drill st ...盒: box; case将下部钻具立于钻杆盒内: setback bottom hole assembly钻杆盒在旁侧的井架: bulge derrick这根钻杆不要放在钻杆盒上: don’t set this stand back下载手机词典可随时随地查词查翻译
