Polite words and expressions can shorten the communicative distance, ease the tension and clear up the conflict.

Pointer words are often determined by actual distance(time or space),but in practice,when actual distance is different from psychological distance,the choice of the pointer word is determined by psychological.

Influencing factors of ignition distance in no-oil ignition combustor;

The effects of the pulverized coal concentration on ignition distance and ignition temperature can be obtained from the numerical simulation results.

In order to study the characteristics of microcombustion,a two-dimensional flame-burning model was established,in which the loss of heat and the quenching distance were considered.