Warning: flock() expects parameter 1 to be resource, boolean given in /www/wwwroot/www.chaziku.com/e/class/connect.php on line 5100
Warning: flock() expects parameter 1 to be resource, boolean given in /www/wwwroot/www.chaziku.com/e/class/connect.php on line 5105
PR英英释意- 查字库
PR
['pi 'ɑr]
- abbr. 公共关系（public relations）；性能要求（Performance Requirement）
英英释意
- 1. a soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process