Content included: study on the relationship between noise and cumulative noise exposure as well as low frequency noise-induced hearing loss and high frequency noise-induced hearing loss; study on the relationship between noise sensitivity as well as LFNIHL and HFNIHL.1 Study on the relationship between noise and CNE as well as LFNIHL and HFNIHL657 data concerning workers' hearing check-up were collected including such types of work as Trial pilots and Riveters.

內(nèi)容包括：噪聲和累積噪聲劑量與語頻和高頻聽力損傷關(guān)系的研究；噪聲敏感與語頻和高頻聽力損傷關(guān)系的研究。 1 噪聲和累積噪聲劑量與語頻和高頻聽力損傷關(guān)系的研究選取成都某大型飛機(jī)制造廠試飛和鉚工兩個(gè)工種作業(yè)人員657名作為研究對象。其中試飛員199人(均為男性；年齡23～60歲18禁网站在线永久免费观看，平均37.36歲；接噪工齡1～42年色哟最新网站入口，平均接噪工齡17.68年)久久久久久久久久精品一。

Main products are high-speed roller feed Machines, materials planes, for correction, riveters, hand-bed, the CD line machines, video machines, measuring instrument, bevel, etc.

主要產(chǎn)品有高速滾輪送料機(jī)，材料架日韩精品更新影院在线播放视频，矯正機(jī)黄色视频看网站，鉚釘機(jī)，手壓床在线a片大全，裁線機(jī)91麻花色最新地址，端子機(jī)，測力儀http://zhcy.com，倒角機(jī)等美女的隐私秘视频免费官网。

Shenzhen Yan-chang hardware machinery has been more than 10 years to create all kinds of professional riveters, Corn machine, glue on the machine, sub-machine, hydraulic cutting machine, e-cutting machine, hydraulic bronzing machine, a variety pneumatic, hydraulic - Bed, CNC turret punch, and other high-quality precision machinery.

深圳欣昌五金機(jī)械十幾年來一直是專業(yè)制造各種鉚釘機(jī)、雞眼機(jī)一级做一级一级a做片性十三、上膠機(jī)一级黄片儿一级大a黄片啪、分條機(jī)、油壓裁斷機(jī)日本刺激的多人群p、電子裁剪機(jī)美女操网站av、油壓燙金機(jī)、各種規(guī)格氣動(dòng)亚洲图片日韩欧美色图、油壓壓床香蕉视频久、數(shù)控轉(zhuǎn)塔沖床等精密優(yōu)質(zhì)機(jī)器。

The Company Aerospace Hardware Machinery is a professional production riveters, Corn machine, Rivet Die, Die Corn, flowering mode, Sihetun deduction Die, Die, such as waist-withholding deduction series of fighting manufacturers.

本公司宇航五金機(jī)械是一家專業(yè)生產(chǎn)鉚釘機(jī)日本巨乳在线，雞眼機(jī)，鉚釘模久久久久精品国产三级AL换脸，雞眼模自拍偷拍一区二区，開花模，四合扣模午夜福利导航，腰形扣模等打扣系列之廠家天堂网wwwww。

Spacious Secretary Kunpeng Hardware Machinery is a professional production riveters, Corn machine, Rivet Die, Die Corn, flowering mode, Sihetun deduction Die, Die, such as waist-withholding deduction series of fighting manufacturers.

敝司鯤鵬五金機(jī)械是一家專業(yè)生產(chǎn)鉚釘機(jī)、雞眼機(jī)、鉚釘模午夜欧美黄色、雞眼模国产在线观看小视频、開花模、四合扣模日本黄色网视频站、腰形扣模等打扣系列之廠家国产黄色孕妇网站。

The main products are: parts ultrasound waves rocking washing machine, the channel of high-density products bearing ultrasonic cleaning machines, ultrasonic cleaning machine volume, from oil machine, dryer, a set of desktop semi-automatic instrument, the pressure of feet, riveters, the whole Rotating sets of automatic machines, machines, measurement systems, automatic注油Gland line.

主要產(chǎn)品有：部品超生波搖動(dòng)清洗機(jī)，通道式高密度成品軸承超聲波清洗機(jī)看农村黄色视频，容積式超聲波清洗機(jī)bbixx视频在线看，脫油機(jī)，烘干機(jī)欧美岛国在线，臺(tái)式半自動(dòng)合套儀人人操黄、壓腳機(jī)、鉚釘機(jī)人人人人操在线国产、全自動(dòng)轉(zhuǎn)盤式合套機(jī)黄色3级毛，機(jī)外測量系統(tǒng)，全自動(dòng)注油壓蓋線国家a级黄片。