后摆

With the wheels of history chugging into the 21st century and China's accession into the WTO, enormous opportunities as well as tough challenges confront Chinese government and its people.

随着历史的车轮驶入二十一世纪以及中国加入世界贸易组织，中国政府和人民面临着巨大的机遇，同时也面临着严峻的挑战。

The logical operation of microcomputer-based protection is affected by signal acquisition precision.

采样信号提取的准确性直接影响微机保护判断逻辑的正确性。