thruster

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++thrust·er /ˈθrʌstə $ -ər/ noun [countable] technical  a small engine on a spacecraft that controls its height and direction by pushing out gas 〔航天器的〕推力器

thrust·er nounChineseSyllable  

thruster
thrust‧er /ˈθrʌstə $ -ər/ noun [countable] technical
a small engine on a spacecraft that controls its height and direction by pushing out gas

thrust·erBrE /ˈθrʌstə(r)/ 🔊NAmE /ˈθrʌstər/ 🔊 nouna small engine used to provide extra force, especially on a spacecraft 助力器；（尤指航天器的）推力器，推进器