目的 探讨坚韧人格、心理应激与心理症状间的关系.方法 使用坚韧人格量表、大学生心理应激量表和心理症状自评量表,对622名在校大......

Experiments were carried out to investigate the possible use of neutron backscattering for the detection of polyethylene......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

Two types of porous metal moderators (i.e. porous nickel layer and multi-wire tungsten layer) are proposed and tested on......