A sophisticated deflector between quadrupole rod and electron multiplier can efficiently deflect ion beam and reduce the noise to minimum level.
四极杆和电子倍增器之间的偏转板能有效地使离子束偏转,并使噪声最低,最小可检分压强低于5×10-~(11)Pa。
The existing problems of shell side structure for domestic current tubular fixed bed reactor are discussed and evaluated. The improvement of shell side structure by adopting outside flow deflector type inlet and outlet structure and adopting baffle rod to support reaction tube are proposed.
探讨和评介了国内现行列管式固定床反应器的壳程结构存在的问题,提出壳程采用外导流筒式进、出口结构和采用折流杆支撑反应管的结构改进措施。
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