w
w
名词 w:
a heavy grey-white metallic element; the pure form is used mainly in electrical applications; it is found in several ores including wolframite and scheelite
同义词：tungsten, wolfram, atomic number 74
the cardinal compass point that is a 270 degrees
a unit of power equal to 1 joule per second; the power dissipated by a current of 1 ampere flowing across a resistance of 1 ohm
同义词：watt
the 23rd letter of the Roman alphabet
考试词汇表
