血管闭塞的过程一旦开始，就倾向于持续恶化，除非使用外科手术治疗。
The process of blockage once it begins tends to continue despite any known medical management unless treated with surgery.
内皮细胞功能障碍是在导致被称为的动脉硬化的血管闭塞的过程中起着关键作用。
Endothelial cell dysfunction plays a key role in the development of clogged arteries, a process called atherosclerosis.
在新建高速铁路的过程中，首先要解决的是选线设计和闭塞分区的设计，列车牵引计算是划分自动闭塞分区的基础。
In the progress of constructed high speed railway the design of choosing lines and the design of automatic block section are the first and most things.
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