electricalchargecarriers, usuallyelectronsor ions, move easily fromatomto atom when voltage is applied. Most metals like copper are considered good conductors, while nonmetals are considered bad conductors -- that is, insulators.
例如：It is obvious that conductors and insulators are both important in industry.很明显导体和绝缘体在工业中都很重要。It is doubtful whether she will be able to come.她是否能来令人怀疑。It was really astonishing that he refused to talk to you .他拒绝和你说话真是令人惊讶。It is ...
“yes, i knew the dust was bad,” borel said. “but we used to talk [about] it among the insulators, [about] how bad was this dust, could it give you tb, could it give you this, and everyone was saying no, that dust don’t hurt you, it dissolves as it hits your lungs.” ...
There are several ways of defining a semiconductor. Historically,the term semiconductor has been used to denote materials having conductivities between those of metals and insulators. Today,there are two more types of conductors:superconductors and semimetals. Typical conductivities of superconductors,metals...
aSet of interrupting chamber including insulators, fixed and moving contacts 套中断的房间包括绝缘体,被修理和移动接触[translate] adistribute the product within the least possible number of centrifuge loads. 分布产品在离心机装载之内的最少可能的数量。[translate] ...
ain terms of atomic bonding explain why metal are good conductors and most ceramics are good insulators 根据原子接合解释为什么金属是好指挥,并且多数陶瓷是好绝缘体[translate] aThis type of advertising has proven in time one of the most trustworthy and efficient in the world. While television appeare...
Are insulators Ohmic materials? Most insulators are actuallyjust bad Ohmic conductors(at room temperature and sufficiently low voltage). Typical insulators are band insulators, which means they have a filled band and a band gap to the next higher band. ...
It arises from the fact that the dielectric materials used within the capacitor are not perfect insulators, and allow some amount of DC current to pass through the capacitor when a constant voltage is applied. Relevance of leakage to capacitor selection is application dependent; it can be a ...
(impure water conducts more readily). It can be used to sort materials by type as well. Resistivity has its uses as well. Of these, perhaps the best known is the use of rubber as an electrical insulator. Insulators are materials used to surround conductors to prevent the passage of ...
Crocidolite: Crocidolite was used in products like cement and insulators. However, it isn’t as heat-resistant as other asbestos formations. It is also known as “blue asbestos.” Tremolite: Tremolite was used in consumer products like paint and talcum powder. It was known for its heat-res...