Chinese Expeditionary Force(CEF)was one of the two Chinese military excursions outside of sovereign Chinese territory sent to repel Japanese forces occupying Burma during World War II.By 1941,the World War II entered ...Chinese Expeditionary Force(CEF)was one of the two Chinese military excursions outside of sovereign Chinese territory sent to repel Japanese forces occupying Burma during World War II.By 1941,the World War II entered its darkest days.China had been embroiled in a desperate struggle to resist the Japanese invasion.Japanese troops aiming at cutting the supply routes to China had left only one line of communication open for China to the West—the Yunnan-Burma Road in the southwest[1].To展开更多
矿产储备政策是美国矿产政策的基石，也是美国一项基本政策。早在二战前，美国就制定了战略矿产法（Strategic Minerals Act of 1939），实行了重要矿产的战略储备。原美国矿山局和美国地质调查局还依据该法研究了美国锑、铬、锰、汞、...矿产储备政策是美国矿产政策的基石，也是美国一项基本政策。早在二战前，美国就制定了战略矿产法（Strategic Minerals Act of 1939），实行了重要矿产的战略储备。原美国矿山局和美国地质调查局还依据该法研究了美国锑、铬、锰、汞、镍、锡和钨7种战略矿产的可能供给来源和方案，并在整个二战期间将研究范围扩大到39种矿产（不包括普通工业矿物），展开更多
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文摘Chinese Expeditionary Force(CEF)was one of the two Chinese military excursions outside of sovereign Chinese territory sent to repel Japanese forces occupying Burma during World War II.By 1941,the World War II entered its darkest days.China had been embroiled in a desperate struggle to resist the Japanese invasion.Japanese troops aiming at cutting the supply routes to China had left only one line of communication open for China to the West—the Yunnan-Burma Road in the southwest[1].To
文摘矿产储备政策是美国矿产政策的基石，也是美国一项基本政策。早在二战前，美国就制定了战略矿产法（Strategic Minerals Act of 1939），实行了重要矿产的战略储备。原美国矿山局和美国地质调查局还依据该法研究了美国锑、铬、锰、汞、镍、锡和钨7种战略矿产的可能供给来源和方案，并在整个二战期间将研究范围扩大到39种矿产（不包括普通工业矿物），
