DEXIN DC-1800N SCIENTIFIC CALCULATOR DEXINOST DC-1800N SCIENTIFIC CALCULATOR 0 「三20+13145 368351 「520+13145 1368035 H 4m0 MC站面O SHIFT ALPHA P MODE CLR ON X! nPr Roc( X1 nCr Pol( X3 dc a ab/c 10 x2 log In B REI sin D cos 912J hyp E tan"E sin cos STO tan X 8 9 DEL AC RCL ENG M-M M+ INS DY LCLJ 5 6 × 8 DEL 3 4 5 6 r S-SUM T EXP Ans rS-VAR T 3 Rnd Rans EXP Ans 考试专用