火箭有一个巨大的核心，两侧是两个固体火箭助推器，每个比战神i的第一级稍微大一些。
The rocket consists of a giant core stage flanked by two solid rocket boosters, each slightly larger than the first stage of Ares I.
NASA需要好天气来发射战神I-X，因为工程师们要在第一级火箭分离前观测火箭飞行全过程，第一级火箭分离标志着试飞的结束。
NASA needs good weather to launch Ares I-X because engineers need to see the rocket flight all the way through first stage separation, which will mark the end of the test.
火箭又长又细，上部有点粗，因为它的第二级比固体燃料火箭发动机驱动的第一级要厚。
The rocket is long and slender, and fatter on top because its second stage is thicker than its solid rocket motor-powered first stage.
一枚火箭可能会由多个部分组成，每一个部分称作一级，每一级又包含各自的引擎。当某一级的燃料耗尽时就回自动脱离火箭。
Rockets can be made up of multiple sections, known as stages, each of which contain an engine and can be jettisoned when their fuel runs out.
这个令人目眩神迷的美景展示的是火箭的捆绑式助推器和它的上一级脱离并掉回地上时的情景。
The stunning display was produced when the rocket's Fregat strap-on boosters separated from its upper stage, and dropped to the ground.
随着一级空火箭和一个月球探测器分别撞击到月球表面不同的两座环形山上，美国航空航天局（NASA）的大型“双重撞月”行动在今天早晨取得了成功。
NASA's double sledgehammer shot to the moon succeeded early this morning when an empty rocket stage and a lunar probe each crashed into separate craters.
“罗老”号二级火箭的第一级由俄罗斯设计并建造，第二级由韩国负责。
The first stage of the two-stage Naro rocket was designed and built by Russia and the second by South Korea.
然而同一级别的其他火箭，例如由波音公司与洛克斯勒马汀公司联合经营的波音德尔塔IV与阿特勒斯V火箭，是军工联合企业的子辈。
Other rockets of this class, such as Boeing’s Delta IV and the Atlas V, operated jointly by Boeing and Lockheed Martin, are children of the military-industrial complex.
日志也记录了杂乱无章的太空中发生的一些虚惊事件：弃用的火箭级、覆盖层以及脚固定环都曾擦身而过。
The logs also included near-misses in the clutter of space: old rocket-stages, blankets and foot restraints, all orbiting past.
引述韩国和美国情报部门的报告，该报纸指出，此火箭的第二级落入距离发射点舞水端里3200千米的海域中。
Citing South Korean and US intelligence authorities, the paper reported that the rocket's second stage landed in waters about 1, 984 miles (3, 200km) from the Musudan-ri launch site.
该火箭的第一级是发射航天飞机用的固体燃料火箭的马力加强版；顶端一级是同样增强了马力的用在土星火箭上的J2巨型发动机。
Its first stage is a souped-up version of one of the shuttle's solid-fuel rockets; its top stage is a similarly muscled-up model of the Saturn's massive J2 engines.
火箭的上半部分是个仿造品，把第一级和“猎户座”(Orion)乘员舱结合在一起，使其设计及重量与实际情况相若。
The top half of the rocket is a dummy version, combining its upper stage and the Orion crew capsule, designed and weighted to mimic the real thing.
一旦火箭的第一级熄火，并且与顶部的战神一号X型分离，所有这些部件都将返回到地球。
Once the first stage has been extinguished and has separated from the top of the 1-x, all the elements will come back to Earth.
NASA计划用五级航天飞机助推火箭作为Ares I火箭的第一级，Ares i是淘汰航天飞机后的星座计划使用的两种火箭之一。
NASA plans to use a five-segment shuttle booster as the first stage of its Ares I rocket, one of two being designed as part of the post-shuttle Constellation program.
火箭的两级将在海拔13万英尺（24.6英里或39千米）的高空分离并继续上升直到海拔15万英尺（28英里或45千米）。
The rocket stages should separate at an altitude of about 130,000 feet (24.6 miles or 39 km) and continue upwards until they hit a maximum altitude of 150,000 feet (28 miles or 45 km).
火箭的两级将在海拔13万英尺(24.6英里或39千米)的高空分离并继续上升直到海拔15万英尺(28英里或45千米)。
The rocket stages should separate at an altitude of about 130, 000 feet (24.6 miles or 39 km) and continue upwards until they hit a maximum altitude of 150, 000 feet (28 miles or 45 km).
它向南部方向飞行，发射4分钟后第一级火箭分离，落到菲律宾东部的太平洋水域。
It flew in a southerly direction and jettisoned its first stage about four minutes after launch in an area of the Pacific Ocean east of the Philippines.
被称作“韩国航天运载器一号”的两级火箭是周二下午5时从韩国南部海岸高兴郡的罗老宇航中心发射升空的。
The two-stage rocket, called Korea Space Launch Vehicle I or KSLV-I, blasted off at 5 p.m. into blue skies from the seaside Naro Space Center, near the city of Goheung on the country's south coast.
发布会表示，级间环是多级火箭的关键组成部分，而用在中国现有火箭上的级间环以往都是分开制造，最后组装的。
The release said an interstage ring is a key component in a multistage rocket, and that those used on China's current rockets were made in sections before being assembled.
说明了该控制系统在30公斤级与100公斤级的双组元燃料变推力姿控火箭发动机中的具体应用情况。
The practical applications of this control system to the hypergolic bipropellant attitude control rocket engines at 30kg and 100kg thrust levels respectively are stated.
它是一种二级、重量15吨固体燃料推进火箭可以改为携带一枚重量半吨的侵彻、高爆弹头，连同专用制导系统一起(一套雷达和图像识别系统)。
It's a two stage, 15 ton, solid fuel rocket that could instead carry a half ton penetrating, high-explosive warhead, along with the special guidance system (a radar and image recognition system).
当第一级烧毁后，沿抛物线的轨道落到地球，而第二级的发动机点火把火箭发射到地球轨道。
After the first stage burns out it falls back to earth along a parabolic path while the engines of the second stage fire to thrust the rocket into an earth orbit.
本文考虑二级火箭在实际允许区域内的最佳质量比问题，得到解的解析表达式。
On the optimum mass ratios of two-stage rocket in the practical permissible region, we get the results analytic expression.
提出了一种进行单级和多级火箭飞行方案设计的一般方法。
A generalized approach to flight program design for single and multi-stage rockets are presented.
下部一级火箭经过仔细检查、维护和重新填充燃料，为几天后的下一次飞行作好准备。
Following inspection, maintenance and refuelling the lower stage will be ready for the next flight a few days later.
以液氧加注控制系统为例，介绍液体运载火箭低温推进剂加注控制所采用的两级分布式系统。
The two level distributed control system for cryogenic propellant loading is introduced, taking the Lox loading control system for example.
这次发射旨在令印度跻身拥有发射重型卫星入轨技术的少数国家之列，但紧随着火箭点火发生的第一级故障使得这项目标落空。
The mission, aimed at putting India in a club of countries with the technology to put heavy satellites in orbit, failed when the rocket developed a snag soon after lift-off in the first stage itself.
CZ - 2c是适用于发射低轨道、质量较大卫星的二级液体运载火箭。
CZ-2C is a two-stage liquid propellant launch vehicle, which is suitable for launching heavier LEO satellite.
CZ - 2c是适用于发射低轨道、质量较大卫星的二级液体运载火箭。
CZ-2C is a two-stage liquid propellant launch vehicle, which is suitable for launching heavier LEO satellite.
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