XYD - What does XYD stand for? The Free Dictionary
References in periodicals archive
 designed an XYD
oil-gas-water three-phase automatic metering unit which could realize the automatic online consecutive metering of oil-gas-water [and the gas production, well production of a single well.] Pang et al.
Can anyone send me a copy of instructions for IBM Electric Typewriter, Model XYD
? I will gladly pay postage.