This essay explains the necessity of proper exhaust of combustible airflow, compares inner guide with outerguide.
阐述了箱式垂直发射系统燃气流合理排导的必要性。
2
The outer portions of the guide shoe are made from steel, generally matching the casing in size and threads, if not steel grade.
引鞋的外部由钢制成，一般与套管的尺寸和螺纹匹配，如果钢级不匹配的话。
3
Interior hub sleeve has the continuous wavy guide slot that circumference is extended, and outer hub sleeve has evenly distributed and axially extended slot on its inner cylinder face.