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- U.S. scientists say they have developed technology that can detect trace amounts of explosives, drugs or many other substances through fingerprints. 美国科学家表示，他们已开发出能够透过指纹来侦测微量爆裂物、毒品或许多其他物质的技术。
- There is a lack of a technology with a sufficient sensitivity to detect trace DNA adducts related to low environmental exposure levels. DNA加合物作为生物标志物的应用需要安全、灵敏、快速的先进分析技术。
- Detection trace CF 4 in NF 3 by GC/MS was discussed in this paper. 本文利用色谱 质谱联用技术对NF3中微量CF4进行了测定。
- Trace amount, a method for detect trace amount substance, such as toluene, using an ion mobility spectrometer equipped with a laser ionization source, is researched. 摘要以对痕量甲苯的检测为例，研究了以激光作为电离源的离子迁移谱对痕量物质进行检测的方法。
- Non-dispersive Infrared (NDIR)spectroscopic technique based on Lamber-beer law is used to detect trace gas in air.In the Lamber-beer law,approximation absorbance is linear to gas concentration. 针对城市痕量污染气体检测中,所测气体浓度低、吸收弱,采用两点标定和高浓度标气定标造成吸收曲线误差增大的问题,本文提出了采用低浓度标气、多点定标的方法来获得吸收曲线的方法来建立吸收方程。
- We detected traces of the poison in her food. 我们在她的食物里发现了微量毒药。
- He said: "In some specific conditions, through the urine test can detect traces of the existence of cera. 他说：“在一些特定的条件下，通过尿检就能查出cera存在的痕迹。
- To Detect Trace Organic Phosphorus Pesticide Using GC-Pulse FPD 气相色谱-脉冲火焰光度检测器测定痕量有机磷农药
- French Anti-Doping Agency announced the day before yesterday, this year's Tour de France time trial champion Michael Schumacher paragraph of the blood samples to detect traces of the use of cera. 法国反兴奋剂机构前天宣布，今年环法大赛计时赛段冠军舒马赫的血液样本检测出了使用cera的痕迹。
- 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。
- 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 dentist could detect no decay in her teeth. 牙医检查了她的牙，未见有龋齿。
- I seemed to detect some anger in his voice. 我似乎在他的声音中听出一些怒气。
