青青青国产91蜜臀一区二区_国产日韩精品情侣AV_国产在线91国语_日本黄a在线网站大全_A在线视频这里只有精品_亚洲丁香五月亚洲欧美_天堂欧美城网站网址_影视自拍高清无码_粉嫩嫩国模无码大尺度视频_国产亚洲欧美日韩在线爱豆

Chip muffler series

T701-6 impedance composite muffler

T701-6 impedance composite muffler

Purpose and characteristics:


The resistance of the impedance composite muffler is composed of the sudden change of the inner section of the pipe and the function of the expansion chamber between the inner and outer pipes, and the resistance is composed of the resistive sound absorber.


explain:


At rated air volume, the low-frequency noise reduction is 10-20db (a), the intermediate frequency noise reduction is 20-38db (a), and the high-frequency noise reduction is 26-39db (a).

 

 

Purpose and characteristics:


The resistance of the impedance composite muffler is composed of the sudden change of the inner section of the pipe and the function of the expansion chamber between the inner and outer pipes, and the resistance is composed of the resistive sound absorber.


explain:


At rated air volume, the low-frequency noise reduction is 10-20db (a), the intermediate frequency noise reduction is 20-38db (a), and the high-frequency noise reduction is 26-39db (a).

Hot recommendation

Wdxf-b flat swirl tuyere

Wdxf-b flat swirl...

View details
Watcd-f temperature sensing circular diffuser

Watcd-f temperatu...

View details
Wdbf-c floor diffuser

Wdbf-c floor diff...

View details
主站蜘蛛池模板: 一及毛片真人视频 | 精品无码人妻一区二区三区四 | 无码日韩人妻AV一区免费l | 大黑屌AV 麻豆 | 欧美a台湾a日韩a | ,精品人妻aV中文字幕乱码 | 一边A爱做片一边免费观看 亚洲免费观看无码成人电影 | 91人妻人人做人碰人人爽九色 | 精品人妻无码一区二区三区91电影 | 人妻免费久久久久久久了 | 试看120秒一区二区三区 | 无码一二三区A片内谢 | 日本女人高潮视频麻豆 | 一区二区三区四区高清在线 | 国产成人成人A片在线乱码软件 | 搡BBBB 搡BBB视频 | 亚洲欧美美洲无码精品Ⅴa 色综合久久88色综合天天 | 午夜成人免费视频 | 亚洲AV无码乱码精品 | 亚洲高清s码久久久 | av电影在线观看 | 欧美熟妇在线观看 | 超caopor97| 欧美亂倫近親相姦按摩视频 | 无码人妻一区二区三区免费费 | 91大事件官网入口 | 中文字幕人妻系列 | 中文字幕综合八区 | 亚洲成人无码在线播放 | 成人性生交大片免费看黄9.1 | 国产亚洲乱码Av篇小说 | 亚洲AV无码国产综合一区二区 | 精品一性一色一乱农村 | 精品无码一区二区三区久久苏妲己 | 中文字幕AV免费 | |亚洲级αV无码毛片久久精品 | 女教师一级特黄毛片 | 成人免费A级毛片无码片2023 | 成人小黄书免费网站入口3D | ⅩXXX。ZZZZ国产 | 免费黄色视频网址 |