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By 1978, in the USA, the use of CFCs in aerosol propellants was banned.美國(guó)自1978年起禁止在噴霧劑壓縮氣體中使用含氯氟烴。This law closely resembles that obtained with conventional propellants.這種規(guī)律非常類(lèi)似于用普通推進(jìn)劑所得出的規(guī)律.The lighter version used liqu...
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The lighter version used liquid hydrogen, the heavier used hypergolic propellants.較輕的推進(jìn)器采用液態(tài)氫, 較重的采用自燃推進(jìn)劑.Pressure - fed engines are particularly susceptible to dissolved gas in the propellants.擠壓 式 發(fā)動(dòng)機(jī)對(duì)推進(jìn)劑中溶解的氣體特別敏感.Thi...
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n.推進(jìn)劑，推進(jìn)物( propellant的名詞復(fù)數(shù) )...
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propellants的音標(biāo)：propellants的英式發(fā)音音標(biāo)為：[pr?'pel?nts]propellants的美式發(fā)音音標(biāo)為：[pr?'pel?nts]...