China has sent sent four ships to the month long drills -- a missile destroyer, missile frigate, a supply ship, and its hospital ship the Peace Ark.
中国已派遣4艘军舰来参加这一个月的军演，包括导弹驱逐舰、导弹护卫舰、补给舰和“和平方舟”号医院船。
Drill ship
原声例句
VOA Standard 2014年6月合集
中文百科
钻井船 Drillship
（重定向自Drill ship）
钻井船是指携带钻井设备的海事船只，一般用于新型深水海上油气田的海上钻探和科学钻探。钻井船也用作携带修井、完井设备，如套管、立管安装、水下采油树安装等作业任务的平台。一般由油气生产企业或投资商进行建造，也可以根据游轮搭配动态定位系统（保障船只的位置定位）进行改建。
现代化的钻井船最强大的优势是深水钻探能力，一般可达到2500 m以上，同时节约抵达世界各地油田的时间。与自升式平台和半潜式平台相比，钻井船可独立行驶。在进行钻井的时候，需要将隔水管（海底取油管）从钻井船下到海床上，并在连接井口的位置安装防喷器（英文：blowout preventer，简写为BOP）。
英语百科
Drillship 钻井船
（重定向自Drill ship）
A drillship is a merchant vessel designed for use in exploratory offshore drilling of new oil and gas wells or for scientific drilling purposes. In most recent years the vessels are used in deepwater and ultra-deepwater applications, equipped with the latest and most advanced dynamic positioning systems.
- difference between commercial purchasing and price的意思
- difference between commercial purchasing and selling prices的意思
- difference between cost and book value的意思
- difference between currents的意思
- difference between cw. and ccw. speed的意思
- difference between CW and CCW speeds的意思
- difference between downhole flowing pressure and saturation pressure的意思
- difference between hydrostatic end forces的意思
- difference between industry and agriculture的意思
- difference between means的意思
- difference between mental and manual labor的意思
- difference between named common and blank common的意思
- difference between proportions的意思
- difference between quantity ordered and quantity delivered的意思
- difference between reservoir pressure and injection pressure的意思
- difference between reservoir pressure and saturation pressure的意思
- difference between species的意思
- difference between table top and chair top的意思
- difference between the wages of various trades and jobs should be widened的意思
- difference between town and country的意思
- difference between voltages的意思
- difference between wholesale and retail prices的意思
- difference between workers and peasants的意思
- difference boundary value problem的意思
- difference channel的意思