standard gas造句

Method optimization of determination of chlorothalonil in water by internal standard gas chromatography

It also began a programme of encouraging the upgrading of sub-standard gas water-heaters.

With the nonlinear least squares fit between measured spectra and calibration spectra, standard gas concentrations of co at different temperatures are obtained.

In calibrating the leak, the pressure in the ballast chamber can be precisely controlled in such a way that the standard gas flow through the orifice is close or equal to the leak rate.

Using microwave-heated ceramic chips instead of standard gas flame or electric coil, the system heats pans with near-perfect balance and lets you control the heat level with incredible precision.