in these television broadcasts, the world caught some brief, inside glimpses of life aboard an orbiting spacecraft . 在這許多電視播送節(jié)目中,世界人士見到了一艘沿軌道飛行的太空船上一點(diǎn)簡短的,內(nèi)部的生活片段。
imagine a four-person, surface-to-orbit spacecraft no larger or more expensive than the family car 再設(shè)想一下,一艘由地面發(fā)向太空軌道的四座太空船,無論其體積,還是價(jià)格,都不會超過一輛家用小轎車
with the increase of the human aerospace activities, space debris environment is seriously threatening in-orbit spacecraft safe operation 隨著航天活動的開展,空間碎片環(huán)境嚴(yán)重地威脅著在軌航天器的安全運(yùn)行。
caption : : saturn's ring are well known to people, it is even more complex when viewed from orbiting spacecraft . the image shown an artist illustration of saturn's ring 土星的光環(huán)最為人熟悉,太空探測船近距離的飛行觀測更能夠看到一環(huán)扣一環(huán)的細(xì)致境象。此圖為畫家筆下的土星環(huán)。
tracking and data relay satellite ( tdrs ) system is a communication system providing continous and real-time services such as tracking, telemetry, command and data relay for low-earth-orbit spacecraft 中繼衛(wèi)星系統(tǒng)是一個為低軌航天器提供連續(xù)、實(shí)時(shí)的跟蹤、測控與數(shù)據(jù)中繼服務(wù)的衛(wèi)星通信系統(tǒng)。