It is shown that the strength of plane crank designed by theory of stress is not safe enough.

推導出應矩的計算公式亚洲欧美日韩中文视频在线观看，通過兩種理論對實例的計算對比，得出應力理論設計的曲桿強度不能保證安全，因此，曲桿必須要用應矩理論加以修正日韩在线资源精品视频在线观看免费，才能保證達到要求的安全系數(shù)。

A plane quadric crank mechanism consists of four rigid components connected by a rotary pair and a moving pair.

平面四連桿機構(gòu)是由四個剛性構(gòu)件通過轉(zhuǎn)動副国产免费黄片精品视频2，移動副聯(lián)接激情视频国产一区，且各構(gòu)件上各點運動平面都相互平行的機構(gòu)。

With the industrial development, more and more kinds of crank press were designed, quality requirement is higher and higher, pressure is higher and higher, too.

隨著工業(yè)的發(fā)展国产日韩亚洲欧美激情戏，曲柄壓力機的品種和數(shù)量越來越多欧美色吊，質(zhì)量越來越高99在线精品，壓力也越來越大黄色a片视频网导航。

The main research contents of the dissertation is as follows:(1) It studies the basic structure and working-theory of crank press driven byvarying speed.

結(jié)合課題的研制，本論文的主要研究內(nèi)容如下：(1)研究變速驅(qū)動曲柄壓力機系統(tǒng)的構(gòu)成和工作原理一区高清精品视频在线观看，提出本論文的研究任務影音先锋视频资源。

Based on the structure characteristics of the high-speed closed crank press, a two-degree-of-freedom dynamics mode has been established.

新聞摘要：根據(jù)高速閉式曲柄壓力機結(jié)構(gòu)特點，建立了兩自由度動力學模型男人和女人做视频毛片。

One of the most important problems in the field of forging and stamping is to improve the dynamic property and accuracy of crank press and to reduce the noise in stamping process.

提高曲柄壓力機的動態(tài)性能和精度插插插视频，降低沖壓噪聲是當今鍛壓領域亟待解決的重要問題之一。

Based on the structure characteristics of the high-speed closed crank press, a two-degree-of-freedom dynamics mode has been established.

根據(jù)高速閉式曲柄壓力機結(jié)構(gòu)特點黄色α片，建立了兩自由度動力學模型在线视频A片。

It means that even though the task-at-hand might be a bona-fide way for you to actually make $800,000 your first week in your MLM deal, it just doesn't turn your crank or press your buttons enough to get you into action to do something about it.

它意味著即使任務在手可能是一個真正的，讓您在實際上使80萬元人人干全免费黄色视频，你第一周貴傳銷協(xié)議10：58笑話色色色丝袜，它只是不把你的曲柄或按下按鈕，你可以得到你行動起來做點什么它狼色精品中文字幕在线视频。

Therefore, crank press must be developed vigorously in order to satisfy the needs of the modernization of our country.

與工業(yè)先進的國家相比日韩午夜精品福利久久，我國的曲柄壓力機制造業(yè)仍屬落后，主要表現(xiàn)在質(zhì)量不高欧美精品一区二区福利视频一区、性能不強和品種不全等方面性欧美69式XXXXX，所以還需大力發(fā)展曲柄壓力機，以滿足強國富民的需要国产色在线观看手机在线观看。

The crank press is one of the most wide-ranging used Manufacturing equipment. It is widely used in the field of electrical and electronic equipment production, Automobile Manufacturing.

曲柄壓力機是應用最廣的制造裝備之一AV永久无码天堂网毛片，其廣泛應用于電器機械、汽車国产99、電子設備黄色视频A级毛片、儀器制造、國防工業(yè)亚洲无码啪啪啪网站、日用品等生產(chǎn)行業(yè)精品美乳日韩视频。