A. Graphite B. Silicon C. Phosphorus D. Sulfur 相关知识点: 试题来源: 解析 A。题目中描述的元素是非金属且是良好的电导体。硅是半导体不是良好导体。磷和硫都是非金属但不是电导体。而石墨是非金属且是良好的电导体。反馈 收藏
US4889612 May 22, 1987 Dec 26, 1989 Abbott Laboratories Dielectric substrate, non-metal conductor, and ion selective membraneUS4889612 * 1987年5月22日 1989年12月26日 Abbott Laboratories Ion-selective electrode having a non-metal sensing element...
nonconductor- a material such as glass or porcelain with negligible electrical or thermal conductivity dielectric,insulator bushing- an insulating liner in an opening through which conductors pass material,stuff- the tangible substance that goes into the makeup of a physical object; "coal is a hard...
Heat and electricity conduction is supported by metals; this is why metal wires are used to make electrical wires, whereas non-metals behave as insulators and do not support heat and electricity conduction. Metals have a property of having a high boiling and melting point where as non-metal ne...
ELECTRICAL PLUG CONTACTS AND A SEMI-FINISHED PRODUCT FOR THE PRODUCTION THEREOF Semi-finished product comprises an electrically conducting base body made from a non-precious metal material supporting a contacting coating made from a material that is more precious than the material of the base body. ...
The solid non-metals are brittle or dull and soft as they can be broken down into a powdery substance or mass on tapping down with the hammer. Few examples are Coal and Sulphur. However, Diamond is an exception as it is the hardest non-metal. ...
conductor477may be fabricated from such a metal. The resistance of conductor477may then be monitored, e.g., via terminals C & D (FIG. 6) of test port476, to measure any changes in resistance which may be indicative of fluid having leaked from conduit402and contacted conductor477. For exa...
METALLIZING NONCONDUCTORSThere are many parts whose functions are more adequately served when the properties of both a metal and nonmetal (plastic or ceramic) are combined. In these instances, the part is generally manufactured of the nonconductor and the metal added to its significant surfaces to...
Galvanic corrosion is an electrochemical process in which one metal, the anode, corrodes preferentially when in electrical contact with a different type of metal, the cathode, and both metals are immersed in an electrolyte. In flooded underground power and communications manholes the galvanized steel...
1) non metal conductor 非金属导体1. In this paper, the authors study the fluidzed electrode made up of non metal conductor which has been applied to treating the waste water containing copper ion. 本文对非金属导体流化态电极进行研究 ,并应用于含铜废水处理 ,可将铜离子浓度降到 1 0 - 6...