Volcanic activity over the ages has produced volcanic bombs, pillow lava, " rock dragons" and many other micro-landforms.
在火山活动中形成了火山弹、枕状熔岩、熔岩石龙等微地貌景观。
Volcanic bomb
原声例句
CGTN
假如有如果
Giant chunks of burning rock, also known as volcanic bombs, would be flung outward crushing villages and smothering them with ash.
巨大的大块燃烧的岩石，也被称为火山弹，将被抛向外面损毁村庄，火山灰会令人们窒息。
中文百科
火山弹
火山弹是一种熔岩(火山喷发碎屑)直径大于64 mm (2.5 英寸)，由火山熔岩的黏稠部分喷发形成，在落回地面前凝结成固体，没有结晶，属于喷出火成岩。火山弹可以从火山口飞出数千米，经常在飞行中获得空气动力学外形。火山弹可能很大，1935年日本浅间山喷发出的火山弹测得直接5–6 m飞出600m。火山弹的喷发可能会造成严重人员财产损失。1993年哥伦比亚加勒拉斯火山的突然喷发火山弹造成峰顶6人死亡。
火山弹已知偶尔在冷却时因内部气体压力而爆炸。这一般是“面包皮”型火山弹。
英语百科
Volcanic bomb 火山弹
A volcanic bomb is a mass of molten rock (tephra) larger than 64 mm (2.5 inches) in diameter, formed when a volcano ejects viscous fragments of lava during an eruption. They cool into solid fragments before they reach the ground. Because volcanic bombs cool after they leave the volcano, they are extrusive igneous rocks. Volcanic bombs can be thrown many kilometres from an erupting vent, and often acquire aerodynamic shapes during their flight. Bombs can be extremely large; the 1935 eruption of Mount Asama in Japan expelled bombs measuring 5–6 m in diameter up to 600 m from the vent. Volcanic bombs are a significant volcanic hazard, and can cause severe injuries and death to people in an eruption zone. One such incident occurred at Galeras volcano in Colombia in 1993; six people near the summit were killed and several seriously injured by lava bombs when the volcano erupted unexpectedly.
- Lesser alar cartilage的意思
- lesser alar cartilage of nose的意思
- Lesser alar cartilages的意思
- lesser angle of heel的意思
- Lesser anteater的意思
- lesser anteaters的意思
- lesser anterior fovea of humerus的意思
- Lesser Antillean的意思
- Lesser Antilleans的意思
- Lesser Antilles的意思
- lesser antilles island arc的意思
- Lesser Antilles的意思
- Lesser ape的意思
- Lesser apes的意思
- Lesser Arcana的意思
- Lesser Armenia的意思
- lesser arterial circle的意思
- lesser arterial circle of iris的意思
- Lesser Bairam的意思
- Lesser Bear的意思
- Lesser bilby的意思
- Lesser Blister Beetle的意思
- lesser bougainvillea flower的意思
- lesser bullrush的意思
- lesser bullrushes的意思