(of a metal or other solid) consisting of many crystalline parts that are randomly oriented with respect to each other.
（金属或其他固体）多晶的
a polycrystalline silicon wafer
Example sentencesExamples
The viscosity that governs the creep of a polycrystalline solid material, such as Earth's iron magnesium silicate mantle, is expected to be a strongly 3D function of position.
The yield stress of iron single crystals are very sensitive to both temperature and strain rate and a similar dependence has been found for less pure polycrystalline iron.
In a polycrystalline metal the crack may extend for only a few grain diameters before the crack propagation changes to stage II.
This polycrystalline silicon is not much use for electronics, since the flaws degrade the conductivity; but it is used, for example, to make silicon solar cells, which are the most common commercial photovoltaic devices.
These older style panels are made of crystalline or polycrystalline silicon modules.
Definition of polycrystalline in US English:
polycrystalline
adjective-ˌlīn
(of a metal or other solid) consisting of many crystalline parts that are randomly oriented with respect to each other.
（金属或其他固体）多晶的
a polycrystalline silicon wafer
Example sentencesExamples
These older style panels are made of crystalline or polycrystalline silicon modules.
The yield stress of iron single crystals are very sensitive to both temperature and strain rate and a similar dependence has been found for less pure polycrystalline iron.
In a polycrystalline metal the crack may extend for only a few grain diameters before the crack propagation changes to stage II.
The viscosity that governs the creep of a polycrystalline solid material, such as Earth's iron magnesium silicate mantle, is expected to be a strongly 3D function of position.
This polycrystalline silicon is not much use for electronics, since the flaws degrade the conductivity; but it is used, for example, to make silicon solar cells, which are the most common commercial photovoltaic devices.