... Up-Time 可使用时间 Upstream Boundary 上游闭塞界限 Inverter (VVVF Inverter) 可变电压可变频率变流器 ...
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Uzbekistan has also unilaterally closed most border checkpoints with both upstream countries, set mines along parts of the boundary with Tajikistan, and often holds up commercial traffic.
ECONOMIST: Spats over control of water roil an already unstable region
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