今天下午14点22分，在震耳欲聋的轰鸣声中，长征五号B遥三运载火箭在海南文昌航天发射场点火升空、直冲云霄，将我国空间站首个实验舱，也是我国迄今为止研制的最大最重的航天器——问天实验舱发射至预定轨道。
China launched its Wentian space laboratory on Sunday afternoon at 2:22 pm, sending the country's largest-ever spacecraft to Earth's orbit to become part of the Tiangong space station.
下面，双语君带大家一起来认识下问天实验舱。
问天实验舱由工作舱、气闸舱及资源舱三部分组成，舱体总长17.9米，直径4.2米，发射重量达23吨。这个高度相当于六层楼高，重量相当于10多辆家用小汽车。我变强了，也变壮了！
问天舱 来源：中国载人航天
Wentian laboratory module consists of three parts: crew working compartment, airlock cabin and service module. With a length of 17.9 meters and a takeoff weight of 23 tonnes, the height of Wentian is almost equal to a six-story building and the weight of ten cars.
这样的“大个子”使问天成为全世界现役在轨最重的单舱主动飞行器，对中国航天实力是极大的考验。问天实验舱包含了哪些设备设施？它的成功发射的背后，又藏了哪些黑科技？
新房上线，欢迎入住
问天实验舱舱内设有3个睡眠区、1个卫生区。
完成对接后，中国空间站将更加温馨舒适，“床位”数增加到6个。后续神舟十五号载人飞船发射后，神舟十四号、神舟十五号两个乘组、6名航天员将实现“太空会师”，空间站“满客”运行。
There are three sleeping areas and one sanitation area in the Wentian laboratory module. With six beds, the Chinese space station will be cozy and comfortable.
After the subsequent launch of Shenzhou 15 manned spacecraft, crews of Shenzhou 14 and Shenzhou 15 can join forces and once they do, the space station will be fully occupied.
能源供应，充分保障
问天实验舱配备了一对双自由度柔性太阳帆板，全部展开后的翼展超过55米，比半个足球场还要长。
每个太阳帆板展开面积约110平方米，差不多相当于一套三室一厅房子的面积。这也刷新了我国航天器在轨使用太阳帆板的纪录。
The wingspan of the solar panel in Wentian laboratory module is more than 55 meters, longer than half a football field; each solar panel has an area of about 110 square meters, roughly the size of a three-bedroom apartment, setting a new record for China's solar panel in orbit.
两个硕大的太阳帆板一起工作，将有效收集更多的太阳能，每天平均发电量超过430度，为空间站运行提供充足的能源。
放在地面上，这个日发电量足够一个北京市的普通家庭用上一个半月。
问天实验舱的太阳帆板
Working together, the two giant solar panels will efficiently collect more solar energy, generating electricity of more than 430 kwh on average per day, which provides enough energy for space station operations. The electricity it generates is enough to power a normal household for one and a half months.
组合手臂，操作精细
问天实验舱将在气闸舱外携带一套5米长的“小臂”。这套7自由度的机械臂小巧、精度高，“小手”方便抓中小型设备，做更为精细的操作。
The lab will carry a set of 5-meter-long auxiliary robotic arms outside the airlock, which are small but precise, making it easy for small and medium-sized devices to be grasped for more delicate operations.
问天实验舱灵巧的“小手”
“小臂”还可以与核心舱“大臂”级联成15米长的组合臂，开展更多的舱外操作。
届时，组合臂能够在天和、问天、梦天的空间站三舱组合体之间爬行，“机甲战士”能控制的舱外范围就更大了。
The auxiliary robotic arms can also be cascaded with the core module's major arm to form a 15-meter-long composite arm for additional extravehicular operations. By then, the arm will be able to crawl between the three space station modules of Tianhe, Tianwen and Mengtian, and the "mech warrior" will be able to control an even greater area outside the cabin.
唯美大片，畅所欲拍
在问天实验舱的舱外，还设置了2台云台灯、4台高清摄像机，能够一边打光追光、一边拍摄录制。
通过它们，航天员出舱活动时，地面测控人员可以更清楚地看到、时刻关注到，从而为他们提供更及时的安全保障。另外，它们还能在太空中拍摄许多“壁纸大片”“唯美视频”，将美轮美奂的地球和外太空呈现在世人面前。
“问天”飞行示意图
Outside the Wentian laboratory module, two tripod lamps and four high-definition cameras are set up to shoot and record Earth and the vast expanse of outer space. Ground controller will be able to clearly see the site situation and provide real-time security assurance when astronauts are doing extravehicular activities.
远离噪音，睡个好觉
问天实验舱内部安装了大量压气机、泵、风扇、“太空冰箱”等诸多“不太安静”的设备。
为了给航天员提供一个安静的工作环境，试验人员找出“嗓门”最大、影响最明显的设备，进行更精准、更严格的噪声治理。
Wentian laboratory is packed with compressors, pumps, fans, refrigerators and other equipment which make noise and may disturb the astronauts. In order to provide a quiet working and resting environment, the engineers identified the nosiest equipment and implemented stricter noise control measures.
针对不同类型的噪音产生设备，试验人员们采取了不同的方法，对症下药。
以振动为主的噪声源，被穿上定制的松软舒适的“鞋子”，这样它振动产生的噪声就不会吵到航天员；以声辐射为主的噪声源，被放在隔声比较好的盒子里……最终，问天实验舱工作区噪声可保持在60分贝以下，睡眠区可保持在50分贝以下，满足相关医学标准要求，航天员们可以安静地睡个好觉。
For vibration-based noises, a noise dampening device will be fitted to decrease overall sound noise output. Noise caused by acoustic radiation are placed in boxes with good sound insulation. As a result, the noise level in the working area in Wentian laboratory module can be kept between 10-60 decibels, 10 being the lowest setting for the sleeping area, which meets the medical standards, allowing the astronauts to sleep soundly.
“问天新征程，一站定苍穹。”
伴随轰鸣的火箭腾空声，问天实验舱进入苍穹。目前，问天实验舱在轨动作标准、姿态完美，将按照预定程序与核心舱组合体进行交会对接，神舟十四号航天员乘组将进入问天实验舱开展工作。
“天宫”空间站示意图
“问天”之后，“梦天”也将很快起飞。中国载人航天工程“三步走”的最后一步，决胜在望！
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