| 释义 |
present problems短语¹¹⁴⁴⁶⁷⁺⁴
基本例句
存在问题
The principle and applications in food of PCR were introduced in this paper. The present problems and the future trends of this research technique were also discussed.
介绍了 PCR技术的原理及其在食品有害微生物检测中的应用，同时提出了尚存在的问题，并对其应用前景作了展望。 iciba
For insulating the stoves, ceramic linings are the materials of choice in the lab, but they are difficult to ship and present problems of consistency for mass production.
为了使炉具绝缘，陶瓷衬里是实验室里的一种选择，但是它们运输困难而且大批量生产时品质不稳定。 ecocn |