http://www.coleparmer.com/techinfo/techinfo.asp?ID=629&htmlfile=ReadPumpCurve.htm

ຄລິກລິ້ງ http://www.coleparmer.com/techinfo/techinfo.asp?ID=629&htmlfile=ReadPumpCurve.htm ເພື່ອເປີດແຫຼ່ງຂໍ້ມູນ.