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大?。?span class="single-tag-height">200KB
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論述了采用聲壓法測量齒輪箱噪聲的原理及測試的方法,并對測試過程進(jìn)行了一定的修正。
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頁數(shù): 6頁
ocusing on way s and means of impr oving a nd upgradi ng w ork, further devel opme nt of "three to split". (A) fully grasp "no una uthorised" created. The t ownshi p "no una uthorise d" created t he existi ng buildi ng "one household, one document" survey and file storage w ork must be uncondit ional a nd full coverage. Main corri dor leadi ng to the tow n (road, riv er) village, the Central built
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