E 2 and E 5 sets mainly produced stainable abortive pollens ( SAP ), whereas E 3 set mainly did empty abortive pollens ( EAP ).
E2和E5位点组的作用主要产生染败花粉, 而E3位点组的作用主要产生空败花粉.
Stainable, low cost of operation, product the average huminity reduction is good.
操作稳定, 操作费用较低, 产品干燥的均匀性好.