The technology of single well chemicaltracer measuring residual oil saturation is a kind of measuring methods with high accuracy.
单井示踪剂法测试残余油饱和度技术是一种精度较高的测试方法，探测深度大且具有控制探测深度的能力。
2
The nano-gold particles which feature unique physical, chemical property and biological compatibility, has been widely used in the tracer technology in life science research.
纳米金颗粒具有独特的物理、化学性质和良好的生物兼容性，已广泛应用于生命科学研究中的示踪技术。
3
The chemical property of gadolinium is more stable and safer than that of boron, because gadolinium tracer stays as a complex compound.