mainstay industry

基本解释

Building trade's one of the mainstay industry in the national economy. Its position becomes more and more important.
建築行業是國民經濟支柱産業之一，它在國民經濟和社會發展中的地位和作用越來越重要。
Textile and garment industry is one of important mainstay industry in China's economy and textile and garment trade has an very significant status in China's foreign trade.
紡織品服裝工業是中國國民經濟重要支柱産業之一，紡織品服裝貿易在中國對外貿易中也佔有極其重要的地位。
As the important mainstay industry of national economy in China, real estate economy early warning system has important economical significance and social significance for real estate industry.
作爲我國國民經濟重要支柱産業的房地産業，房地産經濟預警具有重要的經濟意義和社會意義。

Indeed, Mr Deighton believes that the television commercial will remain the mainstay of the advertising industry for years to come.
ECONOMIST: The recession in advertising
That is because natural-gas exports, long the mainstay of the energy industry, are threatened by shale gas in the United States (they have fallen by 5% over the past year).
ECONOMIST: Energy in Canada
These treatments became a mainstay of the nascent biotechnology industry, which started with the founding of Genentech in 1976.
FORBES: How The Odd Couple's Jack Klugman Helped Create The Biotech Industry

支柱産業
Textile industry is the mainstay industry of national economy.
紡織産業是國民經濟的支柱産業。