单词	兩凸流離
释义	同Biconvex lens
随便看	periodical test periodical wave periodic analysis system periodic and/or random deviation periodic anhydride periodic annealing furnace periodic annealing oven periodic annual growth periodic annual increment periodic antenna periodic arc periodic arrangement periodic arthralgia periodic asymmetrical wave periodic attractor periodic audit periodic block periodic blow-down periodic bond chain｛=pbc｝ periodic boundary condition periodic bulimia periodic calibration periodic carriers periodic catatonia periodic change