并发关系

并的英语翻译：

combine; equally

发的英语翻译：

hair; issue; send out; deliver; utter; develop; discover
【医】 capilli; capillus; crinis; crinis capitis; hair; Mit.; pili; pilo-
pilus; thrix; trich-; tricho-

关系的英语翻译：

relation; relationship; appertain; bearing; concern; connection; term; tie
【计】 relation
【医】 rapport; reference; relation; relationship