As a further studying, the "beat" oscillation phenomenon appearing beforce the chatter occurs is analyzed and it is found that there is a self-excited vibration frequency f during the rilling. Farthermore, if the frequency f is infinitively close to one of the natural frequencies of the rolling mill system then an instability will occur.

作為顫振振因的深化研究，對顫振出現(xiàn)前的&拍振&現(xiàn)象進(jìn)行了分析精品a在线不卡，推證了軋制過程中有一個自激頻率f存在久久停黄色网站，而且當(dāng)它與軋機(jī)系統(tǒng)的某個固有頻率無限接近時會立即引起軋機(jī)工作的不穩(wěn)定。

He also received conducting fellowships to work with Helmuth Rilling and Boris Goldovsky.

他還獲得了獎學(xué)金并與赫爾穆特里林和鮑里斯 Goldovsky 一起工作www欧美黄色网站。

You may perhaps have some pleasant,th 北京癲癇病治療中心 rilling,glorious hourss,even in a poor-house.

以至在一個濟(jì)貧院里国产丝袜视频在线播放一区，你也還有愉快、高興A片ねんね视频、光榮的時候免费观看黄页网站。

Basing on present status all over the world and actual instance in our country, CNG rilling station has 2 styles: one is general station, the other is mother-son station.

從國內(nèi)外現(xiàn)狀和我國的實(shí)際情況來看，CNG加氣站有2種建設(shè)類型免费久久..av，一是常規(guī)站，二是子母站(這2種類型的CNG加氣站在我國都得到了長足的發(fā)展亚洲√a无码作爱，但都面臨一些問題)大陆强奸乱伦毛片。

244 While industrial lasers today are most often used for cutting,welding,rilling and measuring,the laser's light can be put to a much different use:separating isotopesto produce nuclear fuel.

參考譯文雖然今天的工業(yè)激光器最經(jīng)常用于切割、焊接国产青榴视频A片在线观看不卡成、鉆孔和測量男女视频在线免费看，但激光可以用于與此迥異的用途：分離同位素以生產(chǎn)核燃料。

In percussived rilling, the rock is broken only by the impact energy of the drilling bit.

沖擊鉆井一般可分為沖擊式欧美刺激a片影院、沖擊回轉(zhuǎn)式和回轉(zhuǎn)沖擊式三類无码亚洲电影在线看。

While industrial lasers today are most often used for cutting , welding , rilling and measuring , the laser's light can be put to a much different use : separating isotopes to produce nuclear fuel.

雖然今天的工業(yè)激光器最經(jīng)常用于切割、焊接A级黄色片在线免费观看、鉆孔和測量A片vi视频，但激光可以用于與此迥異的用途：分離同位素以生產(chǎn)核燃料。

Form then on, it has been developed rapidly and wildly used in geological minerals drilling and petroleum industry. Generally, it can be classified as three kinds: percussived rilling, percussive and rotary dirlling, rotary and percussived rilling.

從此美女裸体扒开尿口桶到爽动态图，該技術(shù)得到了較快的發(fā)地質(zhì)礦產(chǎn)鉆探精品国产亚洲、石油工業(yè)和建筑基礎(chǔ)工程中得到應(yīng)用，取得了較大的經(jīng)濟(jì)效益和社會效益久久riAV一区二区三区。

Chengdu is one of keystone areas for popularizing cleaning vehicles in our country and has lead the whole nation in building rilling station Now Chengdu has built 35 stations -all is general station.

成都市作為全國清潔汽車推廣重點(diǎn)地區(qū)成视频年人黄网站免费视频高潮，CNG加氣站的建設(shè)走在全國前面，目前已建成加氣站35座，但全部為常規(guī)站能在线看av的网站。

B-spline curve generation procedures, HHT, such as plug-ins. rilling version for your learning.

詳細(xì)說明： B樣條曲線生成程序老熟女国产91，HHT插件等。rilling版本www狠狠干，供大家參考學(xué)習(xí)十八岁禁止免费。