1) Punchdown Block
穿孔板，分线盒
2) PULL BOX
穿线盒
3) orifice plate box
孔板盒
1.
The orifice plate box technique of gas regulating units in cokemakingoven has been put in practical use in many coking and chemical plants.
炼焦炉煤气调节装置孔板盒技术已在许多焦化厂投入使用。
4) UNIVERASAL FITTING
通用穿线盒
5) Microperforated panel
微穿孔板
1.
Using transfer matrix method to analyze microperforated panel absorber s acoustic characteristic;
用传递矩阵法分析微穿孔板的声学特性
2.
The possibility and the significance of replacing fibred absorption materials by fibreless materials,especially by microperforated panels,are discussed.
简要地介绍了吸声材料的基本特点，阐述了无纤维性吸声材料（特别是微穿孔板吸声结构）取代传统的纤维性吸声材料的可能性及其重要意义，较详细地介绍了近年来德国以及我国科研人员在无纤维吸声材料研究上所取得的进展。
3.
A calculating program of microperforated panel construction is worked out in this paper.
文中编制了微穿孔板结构的数值分析程序，通过计算实例，对微穿孔板结构的声学特性进行了探讨。
6) Perforated panel
穿孔板
1.
Acoustic properties of perforated panels closely pasted with an absorptive thin layer;
穿孔板背面紧贴吸声薄层时的声学特性
2.
Experimental study on improving absorbing property of perforated panel;
提高穿孔板吸声性能的实验研究
3.
Theoretical analysis and calculation on the acoustic properties of perforated panel absorber were described herein.
对穿孔板吸声结构的声学特性进行了理论分析与计算。
补充资料：孔板
安装在封闭管道中，按节流装置的原理，测量液体、气体和蒸汽流量的检出元件。标准孔板是一块具有圆形开孔的金属薄板,圆孔壁与孔板前端面成直角,安装时孔板轴心与管道轴线同心。孔板已有国际标准(ISO 5167)。测出孔板两端压差，按此标准即可算出具有一定精确度的流量值。孔板取压方式在国际标准中规定为径距取压、法兰取压和角接取压（取压孔紧靠孔板）3种（图1）。当测量含有少量固体的液体或含有少量液体的气体时，为便于少量固体或液体通过，孔板的开孔可制成扇形的,或制成与管道的轴线是偏心的（图2）。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条