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- Radiation trace marker 放射性示踪剂
- It is contributive to analyzing the process of reservoir formation to apply comprehensively various trace markers of the thermal fluid flow. 综合应用各种热流体活动示踪标志,有助于进行油气运聚成藏的过程分析。
- Beforehand, their existence largely had to be deducted from changes in the movement of their parent stars, radiation traces, and other subtle astrophysics techniques. 以往,它们的存在主要是靠母星运动、辐射轨迹和其它精细的天体物理学技术推断出的。
- A mound of stones erected as a memorial or marker. 锥形石冢一堆石头,用于表示纪念或标志
- Lead aprons shield people from radiation. 铅做的工作裙可使人免进辐射。
- 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。
- Radiation reached unheard-of levels. 辐射作用已达到前所未有的程度。
- 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。
- 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。
- The earth's atmosphere filters out much of the sun's radiation. 地球大气层可以滤掉太阳的大部分射线。
- 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
- 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。
- A stone placed over a grave as a marker; a tombstone. 墓碑,墓石置于坟墓上作为记号的石头; 墓石
- 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。