常見例句雙語例句Mineral deposits with karst cavern water;溶洞充水礦床；Some of this deposits were listed as examples to discuss these karst mineral deposits'formation and deterninatal characteristics.列舉了一些礦床實(shí)例，論證了這些礦床的形成過程和識(shí)別特征。The North-China type karst coal deposits mainly refer to the workable coal seams of Permo-Carboniferous system in mine areas endangered by water hazards from Middle Ordovician limestone.華北型巖溶煤田系指主采煤層主要受中奧陶統(tǒng)灰?guī)r水害威脅的石炭二疊系煤礦區(qū)。 返回 karst deposits