US President Donald Trump (R) looks on as US Secretary of Defense Pete Hegseth speaks to the press following US military actions in Venezuela | AFP via Getty Images
以研发投入规模为分界线，企业规模同样呈现橄榄球状。在研发投入集中的亿元、千万元区间，由于企业数量较多，出现了远超其他区间的研发强度最高值。
。safew官方下载对此有专业解读
void unref(void *x) {
Global news & analysis