Biosafety protect and importances of exhaust system in biosafety laboratories were presented.

介绍了生物安全实验室的安全防护及排风系统的重要性。

Statistical analysis shows that the economical importances of lactation, beef and secondary traits in this population are in the proportion of 2 : 1 : 2.

经统计分析表明，北京奶牛群的乳用、肉用和次级性状经济重要性之比为2：1：2。

This article discusses the functions , the shopping skills , the importances for foreign education and the construction about multimedia digital language laboratory.

论述了多媒体数字化语言实验室的性能、选购技巧、在外语教学中的重要性和实验室的建设等问题。

Following the importances of telomere and telomerase in senescence and tumor were recognized, the pathway of telomerase activation is becoming the focus of this area.

随着对端粒和端粒酶在衰老和肿瘤中重要性认识的不断深入，端粒酶的激活途径已日益成为这一研究领域的热点。

The widely used gasoline vehicle consumes a great deal of oil and the emissions badly damage the environment, thus great importances are attached to electric vehicle.

汽油燃料汽车的普及消耗了大量的石油资源，其排放严重破坏了环境，为此，电动汽车的使用已受到充分重视。