HT缩写的意思

TS EDIS NHC OEE ZPT DFB RL OA FA hipdw MD 5W2H SK PI ADG AEE ZM AD EBBW IADC OLC WU-OC TV MSP GM FTL AIIE CFC-A LP NISC ATF SJ MEH CPV KNK DV M.M.S.A. PF qii AVSQ TV HE ECC CC NES ME AG PU AGTA ACD SWL FSW HE SAS AXOD MRL WO/EGR RPM DP BF