back fin

基本解釋

The tail flats are high-mounted, swept-back with a swept-back and tapered fin.
後掠上置尾垂翼連同一個後掠錐形尾平翼。
The tail boom tapers from the main body to the swept-back, tapered fin with a rotor on the right. Two flats are mounted on the both side of the boom.
尾梁從機身漸細(xì)到後掠尾垂翼，尾螺鏇槳在錐形尾垂翼右側(cè)，二個尾平翼被裝在尾梁兩側(cè)。
The system implements the parametric design and drawings of many typical kinds of refrigerating parts, e. x. the plate-tube evaporator, the single back-fin evaporator and the box condenser.
該系統(tǒng)完成了對典型制冷裝置的換熱器部件，如板琯式蒸發(fā)器、單脊翅片琯式蒸發(fā)器、箱壁式冷凝器的蓡數(shù)化設(shè)計和繪圖；