4 for a fire door core board .
用于防火门芯板。
Housrey special type fire door core board (perlite) Mainly applied to wooden fire door, steel fire door in the fire fill material;
防火门专用豪仕莱特芯板（珍珠岩）主要适用于木质防火门、钢质防火门的防火填充材料；
The quality and performances of non-woven fabric and plastic core board place an important role in speeding up the consolidation of soft soil foundation.
无纺布滤膜和塑料芯板的质量与性能，对排水板在软基加固工程中能否发挥其加速软土固结排水的功能至关重要。
The paper also gives a detailed introduction about the EMF measuring devices and the circuit design based on the ARM9 core-board with the design method of modularization.
文中对电磁流量计的测量装置，基于ARM9核心板的模块化电路设计作了详细的介绍。
The paper also gives a detailed introduction about the EMF measuring devices and the circuit design based on the ARM9 core-board with the design method of modularization.
文中对电磁流量计的测量装置，基于ARM9核心板的模块化电路设计作了详细的介绍。
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