Word · Frequency #27252
mica
云母
any of various minerals that split easily into very thin leaves and are used as electrical insulators
- 1.
Any of a group of hydrous aluminosilicate minerals characterized by highly perfect cleavage, so that they readily separate into very thin leaves, more or less elastic.
云母,一类含水铝硅酸盐矿物,具有极完全解理,易剥离成薄而有弹性的叶片。
- 2.
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
由铝或钾等的含水硅酸盐组成的各种矿物,结晶成允许完美剥离成非常薄的片状；因其抗电性而用作电介质
云母,一类含水铝硅酸盐矿物,具有极完全解理,易剥离成薄而有弹性的叶片。；由铝或钾等的含水硅酸盐组成的各种矿物,结晶成允许完美剥离成非常薄的片状；因其抗电性而用作电介质；云母；[化] 云母
In use
The geologist showed us a thin sheet of mica that glittered in the sunlight.
Old stoves often had small windows made of mica because it could withstand high heat.
These micas split into such thin layers that you can see light through them.
mica is used as [role]
作物质名词时通常不可数；as 后接用途或角色。
Mica is used as a dielectric in capacitors.
云母在电容器中用作电介质。
a [sheet/piece] of mica
用 a sheet of 表示数量，mica 仍为不可数名词。
A thin sheet of mica can be split into layers.
薄片云母可以分成多层。
Micas are [type of mineral]
micas 指云母的不同种类，用作可数名词复数。
Connections
Collocations
- mica sheet
- 云母片
- The electrician placed a mica sheet between the contacts to prevent arcing.电工在触点之间放置了一片云母片以防电弧。
- mica powder
- 云母粉
- Mica powder is often added to paint for a pearlescent finish.云母粉常被加入油漆中以获得珠光效果。
- mica insulation
- 云母绝缘材料
- Mica insulation is valued for its high heat resistance in industrial motors.云母绝缘材料因其耐高温性而受到工业电机领域的重视。
- mica flakes
- 云母片（薄片状）
- The rock contained shiny mica flakes that sparkled in the sunlight.这块岩石含有在阳光下闪闪发光的云母片。
- mica capacitor
- 云母电容器
- A mica capacitor offers stable performance at high frequencies.云母电容器在高频下具有稳定的性能。
Learner notes
Memory Tip
云母mica像“my car”车漆，闪亮成片剥落。
Context & Register
语域：neutral 常见场景：geology、mineralogy、electronics mica 是矿物名称，通常在地质、矿物学和电子材料等场合使用，比较常见于科技或工业语境；整体语气中性，不算过于口语或正式。
Grammar Note
指云母材料时通常不可数；指不同种类的云母时可用复数 micas。
Pronunciation & Spelling
真正与 mica /ˈmaɪkə/ 同韵的词包括 pica /ˈpaɪkə/、spica /ˈspaɪkə/ 和 Micah /ˈmaɪkə/。注意拼写上以 -ica 结尾的 sika /ˈsiːkə/、erica /ˈɛrɪkə/、chica /ˈtʃiːkə/ 发音并不相同。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.