On the principle of both work and energy equalization during the upstroke and downstroke, the writer analyses an approximate calculating method of rotary balance acquired by this type of the beam pumping unit.

本文根據(jù)抽油機上下沖程功能相等的原則三级色频，分析了前置式抽油機取得旋轉平衡的近似計算方法。

DRI production process of simulating tests of rotary in laboratory is studied.

摘 要：研究了實驗室轉鼓模擬回轉窯裝置中直接還原鐵的生產工藝黄网页站立于免费。

This is where the drill pipe and collar slips seat when the drill string is suspended from the rotary table for connections or tripping pipe.

當鉆柱為了對接或起下鉆而懸掛在轉盤上時人人干人人玩，其為鉆桿和吊卡坐放位置。

The specification for Rotary Drill Stem Elements is 1mm～6.35mm.

旋轉鉆機鉆桿元件的規(guī)格為 1mm-6.35mmA片欧美另类拳头交在线视。

A rotary separator of vacuum cleaner is composed of a dust collecting container, an opening-closing cover, and a separating plate dividing the dust collecting container into upper space and lower dust collecting chamber.

本發(fā)明屬于一種真空吸塵器用的旋轉分離裝置女同日韩性爱，包括含有異物的空氣流入其內形成螺旋流的集塵箱，可開閉集塵箱的蓋欧美顶级性交，集塵箱內設有分離板色综合久久88色综合久久天天，分離板與集塵箱的下側內周面嚴密地結合，在分離板的下部形成集塵部男人日皮大片久久；分離板是中心開有開口部的圓錐狀欧洲黄色a片，從上面的圓周向下傾斜形成引導部，引導部的最下端有引導異物流入到上述集塵部的流入孔欧美老妇BBB浓毛乱。

There is also the issue of personal preference: the selection rotary electric shaver or foil of the first electric razor.

此外還有個人喜好的問題：是選擇旋轉式電動剃須刀還是金屬箔頭的電動剃須刀外国黄色视频九九。

Rotary motion of the forearm, however, is eminently important too.

然而，前臂的回轉運動99riav成年人视频网站免费观看，也猶為重要91精品一区在线观看。

Since the encipher process and the decipher process are similar to those of encoding and decoding for error-correction, the Complex-Rotary Code may serve the functiens of both data encryption and error-control, an...

由于加密解密過程和糾錯編碼譯碼過程類似，復數(shù)旋轉碼可以同時完成數(shù)據(jù)加密和差錯控制功能a级片你懂，從而能夠構造出一種包括數(shù)據(jù)加密成熟男女性满足视频、糾錯和調制環(huán)節(jié)的多功能組合式傳輸器。

This kind of new engine both has the traditional engine crank link motion gear, and has had the rotary system engine turning performance.

這種新型發(fā)動機既具備傳統(tǒng)發(fā)動機的曲柄連桿機構尤物视频网站免费，又具備了旋轉式發(fā)動機的旋轉特性亚洲欧美强伦一区。

Online experiment result shows that the control system is stable, reliable, and it can meets the technological requirement of the high speed flexible rotary screen engraver.

在線實驗結果表明，控制系統(tǒng)運行穩(wěn)定可靠色天天天综合色天天一区，能夠充分滿足高速柔性圓網噴墨制網機的加工工藝要求久久精品国产999久久久。