機(jī)械工程師招聘試題考試題(編輯修改稿)
2025-04-21 04:19 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 類，適用范圍，潤(rùn)滑油的使用方法。七． 請(qǐng)敘述常用軸承的分類，代號(hào)意義（從倒數(shù)第一開始說(shuō)明）。八． 請(qǐng)畫出FeFe3C合金狀態(tài)圖及大致說(shuō)明每個(gè)區(qū)域組織狀態(tài)。九． 說(shuō)明為什么斜齒比直齒好？十． 試寫出一個(gè)矩型橫斷面的均勻長(zhǎng)桿的抗彎模量。十一 將下面兩段英文翻譯成中文（可選一段也行）Turbo molecular Pumps （渦輪分子泵）Resembling a jet engine, a turbo pump has a stack of rotors, each with multiple, angled blades which drive at very high tangential speed. Gas molecules, hit by the underside of the angled blades, move with momentum in the direction of the higher pressure exhaust.Turbo pumps e in two basic designs. In the SNECMA design (named after a French jetengine manufacturer) all gas enters through the main flange at the visible singleend of the pump。 the Pfeiffer (named after the original turbo pump39。s manufacturer) doubleended design, has two rotors setmounted on a mon axle. Gas enters the pump through a right angle port between the two rotor sets and exits into an exhaust man
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