海词手机词典
  • The analysis of the mixture gas of O_2, CO, CO_2, NO, N_2O, NO_2 and C_3H_6 was done with an improved 102G model gas chromatograph, in which ECD, FID and 5A zeolite, 10%OV-101/Chromosorb W and G.

    播放读音 播放读音