用光密度法计祘了颗粒的数均、体均和重均粒径。

The number, weight and volume-average diameters of the particle were calculated by optical densities.

本文提出蓄热板片周向壁温的计祘式，以及蓄热板片充填高度的逐步计祘方法。

The article provides a formula for Calculating the circumferential wall-temperature of heat-exchanger clements, and an iteration method to calculate the packing height of heat-exchanger elements.

本文提出蓄热板片周向壁温的计祘式，以及蓄热板片充填高度的逐步计祘方法。

The article provides a formula for Calculating the circumferential wall-temperature of heat-exchanger clements, and an iteration method to calculate the packing height of heat-exchanger elements.