环写
环写
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大学英语写作教学改革中重要的一环就是写前阶段教师的角色转换。
Teachers ' role conversion in pre-writing phase is regarded as important in college English writing reform .
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总结和探讨了左手材料对天线性能的影响,仿真分析了开口谐振环对RFID读写器天线的影响,并用读写器天线进行了验证。
The effect of SRRs on RFID reader antennas is simulated , analyzed and verified using different reader antennas .