that is W whatever the formula I have shown you that is the water equivalent we tell water equivalent, this is W and this M w is the mass of water.
हा गुणाकार म्हणजे W, मी दाखवलेल्या सूत्रांमध्ये W म्हणजे पाणी सममूल्य आणि हे Mw म्हणजे पाण्याचे वस्तुमान.