conduct

conduct. early 15c., "to guide, accompany and show the way," from Latin conductus, 过去分词 of conducere "to lead or bring together; contribute, serve," from 同化形式 of com "with, together" + ducere "to lead".

A duct is a pipe, tube, or channel which carries a liquid or gas, or a tube in thebody which carries a liquid such as tears or bile [胆汁].

Conductor or conduction may refer to:

Biology and Music

• In biology, conductor of a recessive [隐性的] gene or genetic carrier. In a new paper, researchers at North Carolina State University lift the veil on the "conductor" plant root stem cell [干细胞] gene that helps orchestrate and coordinate stem cell division of different root stem cell types, ensuring the harmonic communication necessary for plant growth and maintenance.
• Conductor (music), a person who leads a musical ensemble [合奏组] like, for example, an orchestra.

Transport related

• Bus conductor, a person who checks passengers' tickets on a bus
• Conductor (rail), a captain of the crew of a train
• Conductor (underground railroad), an operative of the Underground Railroad of the antebellum-era United States which guided slaves to freedom.
  • ante-: before. The word bellum is a Latin word that means war. antebellum尤指美国内战前。

Physics

• Electrical conductor, an object, substance or material allowing the flow of an electric charge
  • Electrical resistivity and conductivity, the movement of charged particles through an electrical conductor
  • Electrical resistance and conductance
  • Fast ion conductor, a solid-state electrical conductor which conducts due to the movement of ions
  • Mixed conductor, a solid state electrical conductor which conducts due to the movement of ions and electrons
  • The electrical conduction system of the heart transmits signals generated usually by the sinoatrial node [窦房] to cause contraction of the heart muscle.
    • sinus [Origin: Latin, 'curve, fold, hollow place'] 窦; 鼻窦
    • ECG: electrocardiogram (心电图)
    • cardio-: 1) relating to the heart; 2) any type of exercise that makes the heart stronger and healthier, for example running
• Thermal conduction, the transfer of thermal energy through matter
  • The thermal conductivity of a material is a measure of its ability to conduct heat.

A semiconductor material has an electrical conductivity value falling between that of a conductor, such as metallic copper, and an insulator, such as glass.

semi-: half; partially. semi-final (半决赛). quasi-: 准; 半; 似

The resistivity of a semiconductor falls as its temperature rises; metals behave the opposite. Its conducting properties may be altered in useful ways by introducing impurities ("doping") into the crystal structure. When two differently-doped regions exist in the same crystal, a semiconductor junction is created.

The behavior of charge carriers, which include electrons, ions and electron holes, at these junctions is the basis of diodes [二极管], transistors [晶体管] and all modern electronics. Some examples of semiconductors are silicon, germanium [锗], gallium [镓] arsenide [砷化物], and elements near the so-called "metalloid [准金属] staircase" on the periodic table [元素周期表]. After silicon, gallium arsenide is the second most common semiconductor and is used in laser diodes, solar cells, microwave-frequency integrated circuits, and others. Silicon is a critical element for fabricating most electronic circuits.

Arsenic [砷; 砒霜; 信石] is a very strong poison which can kill people. 氯气很毒，然而氯化钠(食盐 HCl)无毒。

A triode is an electronic amplifying vacuum tube [真空管] (or valve in British English) consisting of three electrodes inside an evacuated glass envelope.

-oid: suffix 后缀 (with adjectives and nouns 与形容词和名词结合) resembling; similar to 像...的; 似...的:

• android, asteroid, humanoid, rhomboid, steroid, tabloid [小报]
• asteroid [Origin: asteroeides 'like a star', from aster 'star'] 小行星
• steroid [Origin: sterol type of alcohol (from cholesterol) + -oid] 类固醇
  • sterol: 固醇。alcohol: 乙醇、酒精
• rhomboid: shaped like a rhombus /'rɔmbəs/ =parallelogram

 

半导体材料有哪些元素 | 准金属：B硼 Si硅 As砷 Te碲 At砹。碲dì tellurium. 锑tī The Latin name of antimony is stibium.

六级/考研单词: conduct, liquid, biology, carrier, veil, stem, coordinate, necessity, orchestra, crew, subway, railroad, operative, unite, slave, physics, particle, electron, transmit, curve, fold, hollow, heal, thermal, copper, insulate, crystal, junction, transistor, silicon, staircase, laser, solar, integrate, fabricate, poison, amplify, vacuum, valve, evacuate, envelop, adjective, noun, resemble, cholesterol