helical ribbon
常见例句
- 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.
本發明涉及一種雙螺帶琯式反應器，尤其適用於高性能聚丙烯腈基碳纖維紡絲液制備。
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