copper造句
31. He wore a copper bracelet on his wrist.
32. Ornamental copper pans hung on the wall.
33. El Salvador produces 100,000 tons of refined copper annually.
34. Copper conducts electricity, but plastic does not.
35. Bronze is an alloy of copper and tin.
36. Copper is a good conductor of heat.
37. Copper conducts electricity better than other materials do.
38. He was hammering the sheet of copper flat.
39. The island has been seriously polluted by a copper mine.
40. Miners in Zambia's northern copper belt have gone on strike.
41. In ancient times the rulers ran copper or silver into coins.
42. At room temperature, the thermal conductivity of a diamond is about six times higher than that of a piece of copper.
43. Contemporary photographs are juxtaposed with a sixteenth century, copper Portuguese mirror.
44. Copper nails are better than iron nails because the iron rusts.
45. The worker worked in a little copper with the alloy.
46. One of the properties of copper is that it conducts heat and electricity very well.
47. The students are asked to prove the purity of copper.
48. Copper, brass and aluminium are separated and remelted for reuse.
49. Copper has low resistance.
50. Copper is a good medium for the conduction of heat and electricity.
51. The downward drift in copper prices looks set to continue.
52. We tried to grow some copper sulphate crystals with our children.
53. Copper wire is flexible.
54. As new mines come on stream, Chile's share of world copper output will increase sharply.
55. His hair has reverted back to its original copper hue.
56. The actual figure was made of copper supported by a metal framework which had been especially constructed by Eiffel.
57. Small quantities of copper are often fatal to invertebrates.
58. The surface of the sea became glossy, like copper.
59. A copper chased him up there.
60. If used on copper, they will chew it up.
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