您要查找的是不是：
- VLF dual trace oscilloscope 甚低频二踪示波器
- dual trace oscilloscope with delay line 附有延迟线的双踪示波器
- double gun and dual trace oscilloscope tube 双枪双迹示波管
- dual trace oscilloscope 双线示波器
- An instantaneous oscilloscope trace or photograph. 波形图瞬间即完成的示波器轨迹或照片
- The road opened out into a dual carriageway. 这条路已扩展成了复式车行道。
- I can't trace that letter you sent me. 我找不到你寄给我的那封信。
- He spoke without a trace of emotion. 他说话时毫不动感情。
- Did the police find any trace of the murderer? 警方找到凶手的行踪了吗？
- They failed to find any trace of the runaways. 他们未能找到逃跑者的任何踪迹。
- There was barely a trace of salt in the soup. 汤里简直一点盐也没有放。
- The post office tried to trace the lost letter. 邮局设法查出那封丢失的信。
- The kids are learning to trace the letter. 孩子们学描字母。
- He always spoke with a trace of sarcasm. 他说话总带着一丝讽刺。
- His dual role as a composer and a conductor made him very busy. 他作曲家和指挥家的双重身份使他非常繁忙。
- The powerhouse was trace out accurately later on a large scale map. 后来发电站被精确地描画在大比例地图上。
- A faint or fleeting indication; a trace. 模糊的暗示模糊的或一闪即逝的暗示; 迹象
- At that point, the road opens out and becomes a dual carriageway. 公路在那个地方变宽了，变成了双车道。
- The country woke from her trace of two hundred years. 这个国家在沉睡了200年之后觉醒过来了。
- The rain flushed away the trace left by the criminals. 大雨把犯罪分子遗留的痕迹冲刷掉了。
