An additional secondaryfilter segment (13) may be placed within the metal support of the main filter segment (8).
附加的次过滤段(13)可以被放置在主过滤段(8)的金属支撑件中。
2
A new approach to keeping control of ship heading is presented, which USES a primary filter and a secondaryfilter.
提出一种采用基本滤波器和辅助滤波器进行船舶航向保持控制的新方法。
3
The primary filter for continuous cleaning, and the secondaryfilter for collection of fine particles. Heat pump can also be offered to increase the total thermal efficiency.