基本解釋[機(jī)械工程]中凸形螺鏇彈簧鼓形彈簧詞組短語短語barrel -shaped pocket spring 獨(dú)立筒彈簧barrel-shaped spring更多詞組專業(yè)釋義機(jī)械工程中凸形螺鏇彈簧鼓形彈簧