Q: How powered samples could be treated?
  如何處理粉狀樣本？
A: If treating powder materials, it may be necessary to attach an inlet dust trap or filter before the 
vacuum pump to prevent particles from getting into the pump interior and damaging the pump.
   如需處理粉狀樣本，有必要在真空泵前段安裝一個進(jìn)氣集塵器，防止粉粒進(jìn)入真空泵內(nèi)
部，導(dǎo)致真空泵損壞。