Mica
['maɪkə]
解釋/意思:
(noun.) any of various minerals consisting of hydrous silicates of aluminum or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves; used as dielectrics because of their resistance to electricity.
手打:罗谢尔--From WordNet
解釋/意思:
(n.) The name of a group of minerals characterized by highly perfect cleavage, so that they readily separate into very thin leaves, more or less elastic. They differ widely in composition, and vary in color from pale brown or yellow to green or black. The transparent forms are used in lanterns, the doors of stoves, etc., being popularly called isinglass. Formerly called also cat-silver, and glimmer.
整理:威尔伯
例句/造句/用法:
- Resting on the cylinder was a palladium-faced pen or spring, which was attached to a mica diaphragm in a resonator. 弗蘭克·路易斯·戴爾. 愛迪生的生平和發明.
- Mica, which so many people know as isinglass, is one of the most important materials in the manufacture of the standard electric iron. 佚名. 神奇的知識之書.
- The result was a double heating element in the form of a V, the resistance wire used being symmetrically wound on a flat, thin mica core. 佚名. 神奇的知識之書.
- SHOWING A BOX OF IMPORTED MICA Above on the table, a stack of cores and several elements ready for insertion in the iron. 佚名. 神奇的知識之書.
- At the edge of the table is a stack of mica strips known as cores. 佚名. 神奇的知識之書.
- The heating element is of the radiant type, made of flat resistance wire wound on mica and placed in a vertical position between the two bread racks. 佚名. 神奇的知識之書.
- If a strip of glass, rubber, mica, or paraffin is introduced anywhere in a circuit, the current ceases. 伯莎M.克拉克. 科學通論.
- He suggested the cutting out of the mica pieces almost to the bottom, leaving the commutator bars separated by air-spaces. 弗蘭克·路易斯·戴爾. 愛迪生的生平和發明.
- He was also the first to use mica in insulating the commutator sections from each other. 弗蘭克·路易斯·戴爾. 愛迪生的生平和發明.
- After the required heat has been reached, the forgings are allowed to either cool in the air, be covered with pulverized mica, or quenched in a special solution, as the case may require. 佚名. 神奇的知識之書.
- Admitting then that gneiss, mica-schist, granite, diorite, etc. 查理斯·達爾文. 物種起源.
- The highest grade mica comes from India and the open box in the picture shows thin, transparent pieces just tumbled out (Fig. 5). 佚名. 神奇的知識之書.
- It was in his machine also that mica was used for the first time as an insulating medium in a commutator. 弗蘭克·路易斯·戴爾. 愛迪生的生平和發明.
- In 1834 William Marr of England patented a lining for a double metallic chest, filled with non-combustible materials such as mica, or talc clay, lime, and graphite. 威廉·亨利·杜利特. 世紀發明.
- The heating element is made of flat ribbon resistance wire wound on mica, then bent into the form of a cylinder to fit into the German silver shell. 佚名. 神奇的知識之書.
整理:威廉