标签：used Combs combs hair wood comb
A comb is a tool consisting of a shaft [长柄] that holds a row of teeth for pulling through the hair to clean, untangle, or style it. Combs have been used since prehistoric times, having been discovered in very refined forms from settlements dating back to 5,000 years ago in Africa.
Combs consist of a shaft and teeth that are placed at a perpendicular angle to the shaft. Combs can be made out of a number of materials, most commonly plastic, metal, or wood. Combs made from ivory and tortoiseshell were once common but concerns for the animals that produce them have reduced their usage. When made from wood, combs are largely made of boxwood [box tree: 黄杨树], cherry wood, or other fine-grained wood.
Close-grained wood, also called fine-grained wood, is any wood in which the annual rings in the wood are tight or close. 黄杨树长得不像盒子，box is the common name for Buxaceae. The boxes (genus Buxus) have been widely introduced to other regions for use as hedge plants and for their wood.
Good quality wooden combs are usually handmade and polished.
Combs come in various shapes and sizes depending on what they are used for. A hairdressing comb may have a thin, tapered [having a shape that gets narrower towards one end] handle for parting hair and close teeth. Common hair combs usually have wider teeth halfway and finer teeth for the rest of the comb. Hot combs were used solely for straightening hair during the colonial era in North America.
A hairbrush comes in both manual and electric models. It is larger than a comb, and is also commonly used for shaping, styling, and cleaning hair. A combination comb and hairbrush was patented in the 19th century.
Combing is a method for preparing carded fibre for spinning. Combing is divided into linear and circular combing.
Comb-drives are microelectromechanical actuators, often used as linear actuators, which utilize electrostatic forces that act between two electrically conductive combs. Comb drive actuators typically operate at the micro- or nanometer scale and are generally manufactured by bulk micromachining or surface micromachining a silicon wafer substrate. 梳状驱动器是微电子机械驱动器，通常用作线性驱动器，利用作用在两个导电梳状物之间的静电力。梳状驱动执行器通常在微或纳米尺度下工作，通常通过对硅片基板进行体微加工或表面微加工来制造。
A honeycomb is a mass of hexagonal prismatic wax cells built by honey bees in their nests to contain their larvae and stores of honey and pollen. 蜂巢是由蜂巢中的六角形棱柱状蜡细胞组成的，用来容纳幼虫和储存的蜂蜜和花粉。
六级/考研单词: comb, shaft, refine, ivory, turtle, usage, hedge, polish, era, manual, patent, fibre, spin, seldom, utilize, conduct, manufacture, bulk, silicon, wax, nest
bomb, comb, tomb, womb的b都都不发音。
标签：used,Combs,combs,hair,wood,comb 来源： https://www.cnblogs.com/funwithwords/p/16533382.html
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