volcanic vent meaning in English
火山道；火山口
火山喷火口
Examples
- A group of volcanic vents will produce a lava of the same mineral composition .
一群火山口将产生相同矿物成份的熔岩。 - That view began to change when deep - ocean explorers first encountered diverse ecosystems thriving at the superheated mouths of volcanic vents on the seafloor
可是，后来深海探测人员在海底火山喷口附近的高热水域中，首度发现不同以往的生态系，使得传统生命观起了变化。 - The most powerful plume in nature is volcanic plume , which is formed by ejection of mixture of pyroclasts and volcanic gases in to the air from volcanic vent
世界上中最壮现的羽流现象是由爆炸性火山喷发的各种火山气体、细粒的火山喷发碎屑物所组成的火山喷发柱，也就是我们俗称的火山蘑菇云。 - 4 . three type of basalt is recognized in changle region : a , sapphire - embodied alkli - olivine - basalt of niushan group ( most distributed in fangshan ) , enriched with a large number of mantle - orignated xenoliths with different extent of weathering ; b , alkli - olivine - basalt of niushan group with little sapphire embodied , but contan a few mantle - orignated xenoliths usually samller than that of fangshan , most of the mantle - orignated xenoliths weathered seriously only lefting with some vacant caves , this kind of rock mostly lies in cangshan , taohuashan . and qiaoguan volcanic vent , contain amount of ilmenite ; c , olivine - basalt of yaoshan group , contain neither xenoliths nor sapphire
4 、在昌乐地区区分出三类主要的玄武岩： a ，牛山组含矿的碱性橄榄玄武岩，位于方山，含大量的大小不一的风化蚀变程度不同的地幔岩包体； b ，牛山组几乎不含矿的碱性橄榄玄武岩，含少量地幔岩包体，且包体一般比方山小，多数已经遭严重风化而只留下空洞，含有相当数量的钛铁矿，主要位于北岩南部的苍山，桃花山及乔官火山口。