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: 91在线无码精品秘 国产色多多 | 久操视频免费大全在线观看 | 人与禽一级婬片A片69式按摩 | 一级婬片60分钟试看下载 | 9191国产精品| 99免费在线观看视频 | 免费看黄色视频网站 | 久6视频在线观看免费 | 人人看免费日人人 | 久久久精品中国女人 | 亚洲一区二区免费在线观看视频网站 | 国产三级片在线观看 | 久久天天拍中文字幕 | 淫淫基地激情五月 | 影音先锋欧美惊人的臀部 | 亚洲AV无码秘 蜜桃羞羞 | av高清无码一九 | 亚洲wwwwwwww | 国产一级特黄大片 | 欧美成人精品日韩在线观看 | 暴艹少妇喷水夜夜精品 | 无码人妻精品一区二区三区蜜臀百度 | 精美少妇xxxx | 国产无码在线视频专区 | 农村黃色A片三級三級三級偷拍 | www一级做a黄色视频 | 国产真实伦对白精彩脏话 | 亚洲精品无码成人片久久-涡桑剁 | 国产伦精品一区二区三区88AV | 欧美视频h一起草 | 国产精品三级久久久久三级 | 亚洲日韩精品秘 在线观看 亚洲无码一区二区在线观看 | 亚洲人成人无码网www国产 | 日韩国产一区二区精品播放 | 亚洲国产精品视频网站 | 精品人妻无码一区二区蜜桃99 | 欧美精品久久久久久久久爆乳 | 国产91九色PORNY已满18 | 波多野结衣无码视频 | 久久精品无码一区二区国产26p | 欧洲一区二区色综合 |