美国的SpaceX公司的商用货运飞船星期天从美国东南地区的佛罗里达州卡纳维拉尔角成功发射，飞船上载有国际空间站所需物资和实验设备。
运载飞船的猎鹰9型火箭预计星期二抵达国际空间站。
星期天的天气对发射非常理想。星期六的大雨迫使飞船的发射时间推迟。
2200多公斤的物资包括将第一次在空间站使用的三维打印机。
美国宇航局希望，宇航员未来可以用三维打印机制造所需零件。
这是SpaceX宇宙飞船的第五次航天飞行。
A commercial SpaceX cargo ship has successfully launched from Cape Canaveral, in the southeastern U.S. state of Florida, carrying supplies and experiments for the International Space Station.
The ship, perched atop a Falcon Nine Rocket, took off at 1:52 a.m. (0552 UTC) and is expected to arrive at the ISS early Tuesday.
Sunday's weather was ideal for the launch, unlike Saturday when rain forced the launch to be postponed.
The more than 2,200 kilograms of supplies includes the first 3-D printer to be used on the space station.
The space agency envisions astronauts one day using the printer to manufacture spare parts as needed.
The mission is the fifth for SpaceX.
