The fact that the mass of a particle is equivalent to a certain of energy means that the particle can no longer be seen as a static object, but has to be conceived as a dynamic pattern, a process involving the energy which manifest itself as the particle’s mass.

[试题]（50）These processes of particle creation and destruction had been predicted from Dirac’s theory before they were actually discovered in nature, and since then they have been observed millions of times.

[试题]B．efore relativistic particle physics, the constituents of matter had always been considered as being either elementary units which were indestructible and unchangeable, or as composite objects which could be broken up into their constituent parts;

[名词解释] Mass Spectrometer（质谱仪）

[名词解释] 病毒粒子（病毒个体virus particle）

[试题]In classical physics, the mass of an object had always been associated with an indestructible material substance, with some “stuff” of which all things were thought to be made.

[单选题]As the temperature of an air mass decreases，the（）.A . absolute humidity decreasesB . relative humidity increasesC . specific humidity decreasesD . dew point rise

[单选题]With supercharging a larger mass of air is supplied to the cylinder by blowing it in under pressure, which is the best means to （） of the engine.A . increase the exhaust temperatureB . increase the power ofC . reduce the speedD . increase the fuel co

[单选题]Particle Tool命令不能创建的是（）A . 单个粒子B . 球形粒子C . 粒子阵列D . 粒子发射器

[名词解释] Peptide mass fingerprint(肽指纹谱)

[名词解释] Tandem mass spectrometry(串联质谱)