请教OG11th_verbal review_RC_13里面一句话的翻译

And despite the urgent need of the United States during the Second World War to mobilize its human resources fully, job segregation by sex characterized even the most important war industries．Moreover, once the war ended，employers quickly returned to men most of the＂male＂jobs that women had been permitted to master．

黄线部分怎么翻译？意思大概明白，句子结构看不懂

谢谢帮助~~~

即使最重要的军工行业都具有性别歧视的特点.

characterized是谓语