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.
本文主要對我國混凝土枕螺栓孔縱裂原因進行分析，提出侷部特殊混凝土改進的思路。
But he had not anticipated that the currency would so soon become a bolt hole for panicky investors fleeing turmoil in world financial markets.
不過，他卻沒有料到，這種貨幣如此迅速的成爲一個避難所，由於深感全球金融市場的動蕩，惶恐的投資者們紛紛湧入這裡。
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.
介紹高爐鑄鋼冷卻壁的鑄造工藝，特別是模板的制作、內冷鉄的使用以及螺栓孔芯子的制作經騐。

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