碰器械 的英文怎麼說
中文拼音 [pèngqìxiè]
碰器械
英文
touching apparatus-
Semiconductor devices - mechanical and climatic test methods - part 16 : particle impact noise detection iec 60749 - 16 : 2003 ; german version en 60749 - 16 : 2003
半導體器件.機械和氣候試驗方法.第16部分:粒子碰撞噪Ebenfalls im trend ist das fitnessstudio. zunehmend mehr menschen treffen sich hier, um gemeinsam zu trainieren. f r jeden muskel gibt es ein trainingsger ? t
同樣時興的是健身房。越來越多的人在這里碰頭，然後一起訓練。對付每一條肌肉都有一種專門的訓練器械。In large rotating machinery using filmatic bearing ( turbogenerator, air compressor, etc. ) there is a potential trouble from impefect installation or running conditions, a metals " contact between rotors and shells. the trouble is usully called rubbing. the advantage of ae technologe in the rubbing diagnosis and early detection is showed. instead of classical ae characteristic parameters ( counts, amplitude, energy, duration and the other ones ) a new feature extraction by frequency analysis of ae envelop signals is discussed. both research of ae process and field experements indicate that periodic components in the envelop spectrum related to rotational speed increase evidently at the beginning of rubbing production, hence are highly sensitive to the rubbing fault diagnosis. according to the new design an acoustic emission equipment for the rubbing diagnosis named buaa ae testing system is developed and described
汽輪發電機、空氣壓縮機等採用油膜支撐的大型轉動機械，由於安裝或運行中的原因，在轉子旋轉過程中，可能和器壁發生輕微的摩擦和碰擊，簡稱碰摩.聲發射技術在碰摩發生特別是故障早期診斷上有優越性.本系統的特點是沒有沿用傳統的計數、幅度、能量和持續時間等聲發射特性參數，而是在聲發射包絡信號的頻率分析中進行特徵提取.聲發射發生的過程分析和現場試驗都表明這種方法對碰摩檢測很敏感，在碰摩發生的起始階段，包絡譜中與轉速同步的周期性分量顯著增加.根據這種新的設計思想自行研製了buaa碰摩聲發射檢測儀並對此作了介紹
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