The electromagnetic spring with tooth structure is adopted in this paper to adjust the stiffness of isolator, which make the isolator work with different stiffness in different excited frequencies. So the isolation performance is improved as the resonance frequency is eliminated in a broad band.

本文采用齒形結(jié)構(gòu)的電磁彈簧來(lái)改變隔振器的剛度97亚洲熟妇自偷自拍另类图片，使隔振器在不同外擾頻率下變剛度運(yùn)行欧美中文自拍另类，從而能實(shí)現(xiàn)在較寬的頻帶范圍內(nèi)無(wú)共振峰日韩福利免费网站视频，改善隔振性能免费A级毛片无码免费视频中国。

This subject is a sub subject of the subsidy project of the national natural fund, the project is studied on kinematics principle and structure techniques of roller of arc spring tooth for collecting plastic film residue .

本課題是國(guó)家自然基金資助項(xiàng)目——弧型挑膜齒殘膜清理滾筒的運(yùn)動(dòng)學(xué)原理及工藝結(jié)構(gòu)研究的子課題，殘膜撿拾滾筒是弧型齒殘膜回收機(jī)的關(guān)鍵部件午夜免费福利视频，本文針對(duì)弧型齒殘膜撿拾滾筒在工作中存在的實(shí)際問(wèn)題日韩精品网站日韩在线观看视频免费，結(jié)合試驗(yàn)進(jìn)行了研究分析，提出了一些改進(jìn)意見(jiàn)破苞见红视频在线观看。

A tooth of a sprocket wheel.

你的牙齒得去治治久久国产黄色视频免费观看。

A tooth of a sprocket wheel .

扣鏈齒鏈輪上的一個(gè)扣鏈齒。夜恋午夜成人影院在线播放网站。最新购买91。

Aimed at the plastic deformation and the burrs on the sprocket wheel tooth face of a sintering machine while meshing with a rolling wheel, the troth contact stress was calculated by using the Hertz theory.

針對(duì)帶式燒結(jié)機(jī)的星輪與臺(tái)車輥輪嚙合時(shí)出現(xiàn)的齒面塑性變形、飛邊等損傷无码免费黄片，應(yīng)用赫茲接觸理論對(duì)齒面接觸應(yīng)力進(jìn)行了計(jì)算免费一级毛片免费一级。

The tooth spaces of the sprocket can be symmetric, asymmetric and the root surface can be relieved.

鏈輪的齒間可以是對(duì)稱的、非對(duì)稱的久久精品国产亚，并且齒根面可以減少999久久精品国产首页。

A gear having tooth elements that are straight and parallel to its axis is known as a spur gear.

一個(gè)齒輪齒后，常常被認(rèn)為是直與平行其主軸是眾所周知的是一個(gè)齒輪等高清在线观看国产亚洲AV。

After the check by the Institute of Vertebrate Paleontology and Paleoanthropology, 93 of the 150 fossils are placed under state protection, and are not allowed to be exported, including the fossils of lycoptera and the molar of stegodon, even a saber-tooth cat skull.

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The stem of each leaf is saw-tooth-like and extremely sharp - hence its name.

莖的每個(gè)葉片是看到齒象和極其鮮明-因此它的名字。

In 1667 a Danish naturalist, Nicolaus Steno, recognized these findings as ancient shark teeth. In 1835 a Swiss naturalist, Louis Agassiz, gave this mysterious creature the name by which it is known today, Megalodon — which in Greek means 'big tooth'.

在1667年黄网免费看，一位丹麥的自然學(xué)家Nicolaus Steno鑒定這些發(fā)現(xiàn)為古代鯊魚(yú)的牙齒欧美18禁网站。1835年，一位瑞士的自然學(xué)家Louis Agassiz29pao在线视频，給予這個(gè)神秘的生物一個(gè)我們現(xiàn)在總所周知的名字：Megalodon爱爱视频a片，這個(gè)詞在希臘語(yǔ)中意思是"大牙齒"。