1. Paw print, or pugmark, tracing is another common technique for counting tigers.
   爪印和老虎的足迹同样是常用的计算老虎数量的方法。
2. He knew they were tracing him.
   他知道他们正在追踪他。
3. She is tracing laboriously now.
   她正在费力地写。
4. A new algorithm for tracing equiangular curves is presented to improve the machining quality of free-form surfaces.
   为了提高自由曲面加工质量,提出一种等斜率曲线跟踪算法。
5. Objective To investigate the risk factors of abnormal intrapartum fetal heart rate(FHR) tracing , increase the prepotency rate.
   目的探讨产时胎心监护异常的影响因素,提高优生优育率。
6. An error compensation control method which can improve contour tracing accuracy of aspherical surface ultraprecise machine is introduced.
   介绍了一种可提高非球曲面超精密加工机床的轮廓跟踪精度的误差补偿控制方法。
7. We've fed up with our boresome work , now it's time to  enjoy tracing our old but still refreshing campus lives.
   我们已经厌倦了烦人的工作。现在是时候重温哪些陈旧但依然清新的的校园生活中了。
8. YAPRM YAPRM (Yet Another POVRay Modeller) is a powerful modeller designed to seamlessly interact with the POVRay ray tracing renderer.
   YAPRM (Yet Another POVRay Modeller) 是一个POVRay光线跟踪编译器的功能强大的无缝模板。
9. Find failure root cause by performing component eletrical and physical failure analysis, such like curve tracing, SAM, decapsulation, cross section, SEM etc.
   通过对半导体器件进行电性及物理失效分析,例如电性曲线分析，超声波扫描，开盖，断面，电子扫描显微等，找出失效的真正原因。
10. The flow model of single phase flow in the elbow of the vertical tubular leacher was studied by using NaCl solution tracing and microcomputer sampling.
    用盐水示踪、微机采样来研究垂直管道浸取器回弯头内单相流的流动模型。
11. To carry out a method of tracing and investigation against the industrial sewage directly discharged into rivers so as to search the main pollutive source.
    对直接排入河道的工业污水来源采取追踪调查的方法，寻找主要污染源。
12. In this paper,methods for producing highbasis weight tracing paper and commonly adopted transparentizing agents are presented,and suggestions on producing high basis weight tracing paper are advanced.
    本文介绍了国外研究高定量描图纸的几种方法和普遍使用的透明化剂，并就我国生产高定量描图纸提出几点建议。

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