bolt hole

基本解释

This paper mainly analyzes the cause and brings forward preventive measures of longitudinal crack from bolt hole of the sleeper.
本文主要对我国混凝土枕螺栓孔纵裂原因进行分析，提出局部特殊混凝土改进的思路。
But he had not anticipated that the currency would so soon become a bolt hole for panicky investors fleeing turmoil in world financial markets.
不过，他却没有料到，这种货币如此迅速的成为一个避难所，由于深感全球金融市场的动荡，惶恐的投资者们纷纷涌入这里。
The foundry technology of blast furnace steel casting cooling wall has been introduced with emphasis on fabricating of pattern plate, use of inner chilling and making experiences of core of bolt hole.
介绍高炉铸钢冷却壁的铸造工艺，特别是模板的制作、内冷铁的使用以及螺栓孔芯子的制作经验。

Many of the foreigners' factories are there because investors in China sought a bolt hole: China has its own high tariffs, many countries limit imports from China, and trade was each year threatened by the annual debate in Congress over the terms of America's trade relations with China.
ECONOMIST: Foreign direct investment
From a traffic flow point of view, the hole in the support on the far side of the box was occupied by a machine bolt with a nut loosely screwed into the end.
FORBES: Zero Dollar Fix