延伸区 meaning in Chinese

extension station
extent
upper wards

5 . the total plan of tourist development . based on the tourism image positioning and features of the tourist resources , this section points out the " comet - style " layout of tourist development , including three large functional districts
围绕总体形象，以旅游资源特色及空间分布为基点，提出“彗星式”的旅游业发展总体布局，将大连划分出三大特色功能区，即现代都市旅游区、蓝色滨海旅游区和旅游发展延伸区。
The research work of the thesis include mainly : ( 1 ) observe a phenomenon which the two fracture modes are simultaneously found near crack tip of a four - point - bend specimen when the ratio of m / q is close to 3 . 0mm , criteria m / q , when the fracture mode of four - point - bend specimen transits from void - mode to shear - mode . intensely location plastic distortion is observed in the front of crack tip and the macro - fracture of the specimen with the same m / q belongs to shear - mode fracture
本文主要在以下几个方面取得了一定的进展：通过四点弯试件的断口和切片试验，观察到裂纹尖端同时存在两种断裂机制? ?在两种断裂模式相互转化的临界状态附近，裂纹前方既有钝化和延伸区中的空穴形核扩张，又有锐化角前剧烈的集中剪切变形。