a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth\\\'s crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors
a complete metric system of units of measurement for scientists; fundamental quantities are length (meter) and mass (kilogram) and time (second) and electric current (ampere) and temperature (kelvin) and amount of matter (mole) and luminous intensity (candela);
\\\"Today the United States is the only country in the world not totally committed to the Systeme International d\\\'Unites\\\"
the syllable naming the seventh (subtonic) note of any musical scale in solmization
造句
The SI unit of magnetic flux equal to the magnetic flux that in linking a circuit of one turn produces in it an electromotive force of one volt as it is uniformly reduced to zero within one second. 韋伯磁通量的國際單位，等于當磁通量在一秒鐘內被統一地減弱為零時在它聯接的一圈電路內產生一伏特電動勢時的磁通量