质子的质量几乎是电子的2,000倍。Protons are nearly 2000 times as heavy as electrons.质子是物质的基本粒子。A proton is an elementary particle of matter.中子和质子构成了原子核.The neutrons and protons form the core of the atom....
She is wearing a small ruby earring.她戴着一枚红宝石小耳环.How long have you worn that earring?你戴那个耳环多久了?A sailor wearing earring now looks very strange to us.现时水手戴耳环,在我们看来是怪碍眼的....
...a steel mill.钢铁厂The V - N microalloy steel with yield strength of 550 MPa is produced by EAF - CSP route.目前,在EAF-CSP 流程中通过V -N 微合金化技术可成功生产屈服强度为550MPa的高强度低合金钢.This accomplished by mounting the elements on a heavy steel...