晶杆的电子密度较低，偶尔有带状高电子密度区、电子致密颗粒和电子透明小泡。
The electron density of the crystalline style is low . Electron denser zone , high electron density granules and some electron lucent vesicles present somewhere .
籽晶杆转动电源的研制
Power Equipment on Controlling Seed Rod Rotation
晶杆