Inv.n.发票; 票据INVabbr.发明者(=Inventor)abbr.反相器(=Inverter)abbr.体外授精(=in vitro fertilization)invigorating Guangxi through industry“工业兴桂”invigorating spleen and regulating qi健脾理气Inviting Tenders and Purchasing Books图书招标采购invigorating physically or mentally.精神充沛的或精力充沛的。involution-typed mixcolumn transform对合型列混合变换involute helicoids double-enveloping渐开面二次包络invigorating stomach to relieve phlegm健胃化痰invigorating spleen and soothing liver健脾疏肝involving three parties or elements.涉及三方或者三个要素。inviting traders and introducing funds招商引资