常見例句雙語例句The invention relates to a double helical ribbon pipe type reactor, which is particularly suitable for preparing high-performance polyacrylonitrile-based carbon fiber spinning solution.本發(fā)明涉及一種雙螺帶琯式反應(yīng)器，尤其適用於高性能聚丙烯腈基碳纖維紡絲液制備。ip.com 返回 helical ribbon