The extruded fintube heat exchanger , which is incommon use inthe world , is quite an ideal heat exchanger .
轧片式翅片管换热器是目前国际上通用的较理想的换热装置。
Hands On Throttle And Stick ( HOTAS ) is a new skill which is incommon use in modern advanced fighters .
握杆操纵技术（HOTAS）是现代先进战斗机已普遍采用的一种新技木。
incommon