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- 燕山期（J-K） Yanshanian (J-K)
- 华北地台中绝大多数金矿赋存于太古宙地层或侵入于太古宙地层中之燕山期岩浆岩体内。 The great majority of gold deposits in North China platform are hosted by the Archeozoic strata or emplaced in the Yanshanian magmatic intrusives of the Archeozoic strata.
- 中国南方印支-燕山期复合盆山体系与盆地原型改造 Composite basin-and-range system and reformation of basin prototype in Indosinian-Yanshanian in South China
- 一期 installment
- 安全期 safe period
- 听一听J, K, L, m, 和N Listen for J,K,L,M and N
- 月经期 menses
- 燕山 Yanshan Mountain
- 经期 menstrual period
- 打梅花可引出北手的j至k。 A club lead runs up to North rs J-K.
- 第一期 first phase
- 期初 beginning of period
- 上期 previous period
- 质保期 quality guarantee period
- 一期工程 first-stage construction
- 产期 confinement
- 即期 current issue
- 首期 downpayment
- 即期信用证 letter of credit at sight
- 燕山期 Phase of Yanshan
