| 1. | Mathematical , physical and chemical symbols of chinese braille
中国盲文数学物理化学符号 |
| 2. | The chemical symbol for copper is " cu "
铜的化学符号是cu 。 |
| 3. | However , the writing of chemical symbols in the form of an equation does not give any assurance that the reaction shown will actually occur
但是,在等式中出现的化学符号并不能保证这一反应真的会产生 |
| 4. | However , the writing of chemical symbols in the form of an equation does not give any assurance that the reaction shown will actually occur
但是将化学符号写成反应式，并不意味着所表示的反应确实回发生。 |
| 5. | Aluminium and aluminium alloys . chemical composition and form of wrought products . part 2 : chemical symbol based designation system
铝和铝合金.锻制产品的化学成分和形状.第2部分:基于命名体系统的化学符号 |
| 6. | A scratch in platinum may leave a mark on the metal , but this metal is so strong that it will not readily chip or splinter
1 .印记：按照国家产品标准，在铂金饰品上应有铂化学符号pt及铂金含量、厂家印记。 |
| 7. | Aluminium and aluminium alloys - designation of alloyed aluminium ingots for remelting , master alloys and castings - part 2 : chemical symbol based designation system
铝和铝合金.重熔母合金和铸件用合金铝锭的命名.第2部分:基于命名系统的化学符号 |
| 8. | Aluminium and aluminium alloys - designation of unalloyed and alloyed aluminium ingots for remelting , master alloys and castings - chemical symbol based designation system
铝和铝合金.再熔母合金和铸件用非合金和合金铝锭的命名.用化学符号表示命名系统 |
| 9. | " nitrogen ： gaseous chemical element , chemical symbol n , atomic number 7 . a colourless , odourless , tasteless gas , it makes up 78 % of earth ' s atmosphere and is a constituent of all living matter .
氮:气态化学元素，化学符号n ，原子序数7 。无色、无臭、无味的气体，占地球大气的78 % ，也是所有生物体的组成部分。 |
| 10. | Where a is the mass number equal to the numbers of protons plus the number of neutrons in the nucleus , z is the atomic number equal to the number of protons in the nucleus , x is the chemical symbol of the atom
表示， a是质量数，是原子核内的质子及中子数目总和。 z是原子序数，等于质子的数目。 x是原子的化学符号。 |
