This effort has included attempts to modify for unmanned flight the MiG-21 (ph) and with greater success an aircraft called the L-29 (ph).
这些无人飞行器中包括改进的无人飞行器米格-21和称之为L-29的飞机。
Pomerranz, Kenneth L. "The Making of a Hinterland: State, Society and Economy in Inland North China, 1900-1937", Ph. D. Dissertation, Yale University, 1988.
彭慕兰：《腹地之构建：1900—1937年华北内地之国家、社会与经济》，耶鲁大学博士论文，1988年。
Kenneth L. Cavanaugh, Ph. D. is Professor of Applied Statistics and Senior Research Scientist, Institute of Science, Technology and Public Policy.
肯尼思·卡瓦诺博士是应用统计学教授、科学、技术与公共政策学高级研究员。
The results show that the following factors affect the polymer growth. They are the pH value of the supporting solution, the ratio of the reductive desorption L …
实验结果表明，下面的几个因素影响着吡咯在自组装膜上的聚合：L-半胱胺酸在混合膜中的比例、支持电解质p H的大小以及聚合单体分子的大小。
The results show that the following factors affect the polymer growth. They are the pH value of the supporting solution, the ratio of the reductive desorption L …
实验结果表明，下面的几个因素影响着吡咯在自组装膜上的聚合：L-半胱胺酸在混合膜中的比例、支持电解质p H的大小以及聚合单体分子的大小。
应用推荐