These results suggested that although opticalexamination is low in cost and convenient, but it is restricted by its detection limit, which influences its results.
实验结果提示镜检虽然简便、易行、成本低，但由于一般观察极限的限制，影响了检出率。
2
Optical computed tomography (OCT) is an important product of optical measuring technique and tomography. It is a new nondestructive examination technique with high accuracy.
光学CT技术是光学测量技术与层析技术相结合的重要产物，它是一项崭新的高精度无损检测技术。
3
The USL unit forms part of an automated line for inspection of assembled printed circuit boards, which includes automated optical, thermal and X ray testing as well as ultrasonic C scan examination.