基本解釋[經(jīng)濟(jì)學(xué)]步進(jìn)式輸送機(jī)詞組短語(yǔ)短語(yǔ)walking -beam coil conveyer 步進(jìn)梁式運(yùn)輸機(jī)walking-beam conveyer更多詞組專業(yè)釋義經(jīng)濟(jì)學(xué)步進(jìn)式輸送機(jī)