Magma can erupt to the surface and form lava flows through the volcano's summit (frequently forming a crater), but it can also erupt from lava domes and flank vents along the volcano's sides.
岩浆能喷发出地表，并通过火山峰顶形成熔岩流(大多情况会形成火山口)，但它也能通过火山山体侧面的火山岩圆顶和侧面出口喷发出来。
This was due to the increase in the contact area at the tool-chip and tool-work interface due to the presence of flank and crater wear.
这是由于增加了接触面的工具，芯片和工具的工作界面因侧翼和火山口的磨损。
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