In South Korea the decline in inventories accelerated in the second quarter, and the leanness of stocks bodes well for further gains in production over the rest of this year.
韩国第二季度的库存下降速度加快，库存量小是今年二季度以后生产进一步回升的吉兆。
Some concepts such as relative rest reference frame, relative uniform motion reference frame, and relative accelerated motion reference frame was confirmed.
确定了相对静止系、相对匀速运动系、相对加速运动系的概念。
Some concepts such as relative rest reference frame, relative uniform motion reference frame, and relative accelerated motion reference frame was confirmed.
确定了相对静止系、相对匀速运动系、相对加速运动系的概念。
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