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日本三菱集团的3家公司,向从事开发并运用空间环境进行实验的美欧战略企业——空间毂公司投资1000万美元,这个数占空间毂公司资金的42％。空间毂公司将建造2个空间毂实验舱,1993年投入使用。空间毂是一个搭载在航天飞机上的有人空间实验增压舱,其直径为4米,长为3米,能搭载包括2～3人在内的1.4吨有效载荷。过去西德的空间实验室也曾搭载在航天飞机上进行了实验,但其尺寸太大,充满了整个有效载荷舱。空间毂的大小只为空间实验室的1/4,其优点是航天飞机的
Three companies of the Mitsubishi Group in Japan invested US$10 million in Space Hub, a US-European strategic company engaged in the development and application of space environment experiments, which accounted for 42% of space hub company funds. The Space Hub Company will build 2 space hub experimental cabins, which will be put into use in 1993. The space hub is a manned space experiment plenum mounted on the space shuttle. Its diameter is 4 meters and its length is 3 meters. It can carry 1.4 tons of payload including 2 to 3 people. In the past, the space laboratory in West Germany had also carried experiments on the space shuttle, but its size was too large to fill the entire payload bay. The size of the space hub is only 1/4 of that of the space laboratory. Its advantage is that of the space shuttle.