mine service-life

基本解释

Part of his strength - and mine - came from you, the American people, to whom he dedicated his life of public service.
他的這種力量部分來自你們美國人民，爲了你們，他願意將全部生命奉獻給公共事業。
The mine of Yinmusi Lead-zinc in Fengxian started construction in 1986, the 1990 production, design service life of 19 years, has produced 11.
風縣銀母寺鉛鋅鑛於1986年開始籌建，1990年投産，設計服務年限19年，至今已生産11年。
The utility model discloses a coal mine deformation-resistant air door, which has long service life and can reduce the production cost of enterprises.
本實用新型公開了一種延長使用壽命，降低企業生産成本的煤鑛耐變形風門。
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