Till now most study of BPR are staying in the region of technology of computer and enterprise management.
到现在为止，对BPR的研究还大多停留在计算机技术和管理学的领域。
The books revised have been handed down till now and are still the important classics for China and other countries to study TCM.
被修改过的医书流传至今并仍是现今中国和全世界学习中医的重要经典著作。
Cerebral hemorrhage model has been built for about 40 years, in which the method of establishing model and study direction have been changed greatly till now.
脑出血模型自建立至今已有近40年时间，模型制作方法及研究方向均有巨大的变化。
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