The scientists found that the ship's builder, Harland and Wolff, in Belfast, struggled for years to obtain adequate supplies of rivets and riveters to build the world's three biggest ships at once: the Titanic and two sisters, Olympic and Britannic.

科學家發(fā)現(xiàn)船的建造者av网址在线播放，哈藍德和沃爾弗曾在貝爾法斯特花了數(shù)年功夫來尋找充足的鉚釘和打鉚機來同時打造世界上最大的三艘巨輪黄色片视频在线免费观看在线小影院，泰坦尼克號和其他兩搜兄弟巨輪，奧林匹克和大不列顛日本高清视。

The noise of Trial pilots was mainly intermediate or high frequency, and that of Riveters was high frequency.

試飛車間的噪聲為穩(wěn)態(tài)噪聲日韩国产区，主要是以中高頻為主，鉚工車間的噪聲為非穩(wěn)態(tài)噪聲视频毛片，主要是以高頻為主亚洲天堂国产制服。

Methods: The sample of 703 aircraft-made workers (522 riveters, 181 test pilots) was chosen randomly and field hygeian survey in aircraft-made site were carried out, as well as hearing test was done at the same time.

用整群抽樣的方法在某飛機廠抽取703名飛機制造工人（其中鉚工工人522名和試飛工人181名），進行現(xiàn)場衛(wèi)生學調查和聽力測試老乱女中文字幕熟女熟妇。

Results showed: The rates of Riveters's tinnitus, deafness, insomnia, dizziness, fatigue and tympana sunken, incrassated, perforated were higher than those of Trial pilots, and all had statistically significant difference P

結果表明：鉚工耳鳴国亚洲视频、耳聾、失眠免费激情网址、頭昏五月天亚洲综合在线电影、疲乏、鼓膜內陷中国精品Jizz免费看、增厚和穿孔檢出率均高于試飛精品欧美视频在线观看视频，除頭昏和疲乏外，其余均有統(tǒng)計學意義P

The scientists found that the ship's builder, Harland and Wolff, in Belfast, struggled for years to obtain adequate supplies of rivets and riveters to build the world's three biggest ships at once: the Titanic and two sisters, Olympic and Britannic.

在新興的信息產業(yè)午夜少妇高潮在线看大片，中國企業(yè)以高科技為師网红日批视频，增強和外國企業(yè)的交流與合作亚洲精品在线视频，提高產品質量国产高清无码视频在线播放。

The scientists found that the ship's builder, Harland and Wolff, in Belfast, struggled for years to obtain adequate supplies of rivets and riveters to build the world's three biggest ships at once: the Titanic and two sisters, Olympic and Britannic.

他們發(fā)現(xiàn)，哈蘭德以及沃爾夫這兩位造船者為了在短期內造好世界上最大的三艘巨輪———泰坦尼克號欧美视频日，以及她的姐妹船亚洲图片无码，奧林匹克號和大不列顛號———在貝爾法斯特苦苦找尋夠格的柳釘及柳釘槍供應商有數(shù)年之久。

The scientists found that the ship's builder, Harland and Wolff, in Belfast, struggled for years to obtain adequate supplies of rivets and riveters to build the world's three biggest ships at once: the Titanic and two sisters, Olympic and Britannic.

1996年日韩毛片色哟哟一区二区三区四区五区，一位攝影師在新疆喀納斯自然保護區(qū)無意間拍到一只白熊性色av不卡无码中文字幕。自此以后的十年里，白熊藏身于深山之中伊人av导航，再無音訊又粗又长黄片。直到2003年国产一级性交高潮片，人們才再次在該自然區(qū)又發(fā)現(xiàn)了白熊的蹤跡。

The scientists found that the ship's builder, Harland and Wolff, in Belfast, struggled for years to obtain adequate supplies of rivets and riveters to build the world's three biggest ships at once: the Titanic and two sisters, Olympic and Britannic.Each required three million rivets, and shortages peaked during Titanic's construction.

科學家證實口爆在线，貝爾法斯特市的造船廠同時承造了三艘當時世界上最大的巨輪国产精品自拍网，即泰坦尼克號和她的兩搜姊妹船：奧林匹克和大不列顛號，而每艘大船需要300萬枚鉚釘--鉚釘缺口在造泰坦尼克號時達到最大一级一级一片在线观看，船廠負責人哈藍德和沃爾弗耗了數(shù)年時間來解決鉚釘和鉚釘工人不足的棘手問題婷婷色五月开心综合先锋影音。

Air riveters and imported machine with cutting of high quality in Tai Wan and so on.

并且是臺灣第一品牌技友牌電動起子在中國的總代理銷售及維修。

Results: The results showed that the prevalence of HFNIHL in riveters, in various ranges from 0.25 kHz to 8 kHz and in work history were significantly higher than those of test pilots; and the prevalence of HFNIHL in riveters was different in different gender. Conclusion: The aircraft-made noise can dramatically injure workers' auditory system, especially showed in high frequence.

結果：鉚工高頻損傷耳數(shù)和電測聽各頻率異常耳數(shù)與試飛員比較差異有統(tǒng)計學意義亚洲男人女人视频；兩工種高頻損傷耳數(shù)與語頻損傷比較差異有統(tǒng)計學意義123区无码乱伦；兩工種不同工齡段，高頻損傷耳數(shù)與語頻損傷比較差異有統(tǒng)計學意義麻豆国产原创福利；鉚工中男性高頻損傷與女性比較差異有統(tǒng)計學意義男女八x八x视频网站。