研究结果表明：细胞核具有中央核仁，核仁可以看到明显的纤维中心、致密纤维中心和颗粒结构。
The nucleus possesses a center nucleolus with fibrillar centers, dense fibrillar component and granular component.
中央空调通风系统送风中的污染物是室内空气的主要污染源之一，主要的污染物是可吸入颗粒物和微生物。
The contamination in the central air conditioning duct system is the one of the principal contamination of the indoor air, it include inhalable particle and microorganism.
实验研究结果表明：分子筛催化剂颗粒粒径的大小对壁面传热系数和总传热系数影响大，而对中央区的传热系数无影响。
Experimental results reveal that this diameter exerts strong influence to the overall heat transfer coefficients and that on the wall, but irrelevant to that in the central zone.
应用推荐