常見例句雙語例句The stratiform and strata-bound iron ore deposits in the Middle Triassic series in the lower reaches of the Yangzi River were formerly considered as simple contact-metasomatic ore deposits.長(zhǎng)江中下游中三迭統(tǒng)層狀—層控型鐵礦床，曾被傳統(tǒng)地視為典型的接觸交代型礦床。 返回 lower triassic series