Beier Depression was divided into rift structure, fault-depressedstructure and depressedstructure from below.
贝尔凹陷自下而上划分为断陷构造层、断-坳转化构造层和凹陷构造层。
2
Described are the development process, main usage, technical parameters, main structure and testing of the D28 depressed center flat car.
介绍了D 28型凹底平车的研制过程、主要用途、技术参数、主要结构及试验情况等。
3
The thin-wall box made by the utility model has tightly integrated wall plates to prevent from being damaged or depressed, and has the advantages of easy formation and reliable structure.