Minerals that do not exhibit cleavage are said to fracture when broken. Some break into pieces with smooth curved surfaces resembling broken glass. Others break into splinters or fibers, but most fracture irregularly. 译文 矿物的物理性质 ①矿物质是由无机过程形成的天然固体。由于矿物的内部结构和化学...
"That’sgarnet, often associated with friendship," he explained, pointing to a bright yellow stone nearby. "And over there iscitrine, which represents positivity and energy." Emily was enchanted by a smooth green stone. "What’s thi...
Since 1959, 18 new minerals have been discovered in this deposit, and Oboniobite and Scandio-fluoro-eckermannite are the 19th and 20th discovered here, said Li Xiao. Fan Hongrui, a researcher of the CAS Institute of Geology and Geophysics, said that Oboniobite is yellow-brown to brown in...
Research has shown that certain minerals are required by plants for normal growth and development. The soil is the source of these minerals, which are absorbed by the plant with the water from the soil. Even nitrogen, which is a gas in its elemental state, is normally absorbed from the soi...
三个对应点，certain minerals，large quantities和代词others，有mineral的只有A和B两个选项；带入之后发现A是正确的，
Research has shown that certain minerals are required by plants for normal growth and development. The soil is the source of these minerals, which are absorbed by the plant with the water from the soil. Even nitrogen, which is a gas in its elemental state, is normally absorbed from the soi...
it is said to possess exotic coloration. Exotic coloration is usually caused by the inclusion of impurities, such as foreign ions, in the crystalline structure Other minerals for example, sulfur, which is yellow, and malachite, which is bright green-are said to have inherent coloration becaus...
People may mistake pyrite for gold because the two minerals are shiny, metallic, and yellow in color. Lesson Summary For a substance to be a mineral, it must be a naturally occurring, inorganic, crystalline solid that has a characteristic chemical composition and crystal structure. The atoms in...
The stones from these mines are nicknamed "Premiers" and "Jagers." In the early 1900s many diamond merchants would seek out stones with a strong blue fluorescence. They believed that these stones would appear more colorless (less yellow) when viewed in light with a high ultraviolet content. ...
aI got yellow fever you got jungle feve 正在翻译,请等待... [translate] awe are eyewitnesses to how borders of time and space that once separated countries and the activities therein appear to be diminishing 我们是目击者对怎样曾经分离国家和活动在其中时间和空间的边界看来是减少[translate] ...