| 释义 |
semi-ˈcrystalline, a.
[semi- 8 a.]
Having or being a structure of crystals embedded in an amorphous groundmass; having or being a structure possessing crystalline character to some extent.
1816Edin. Rev. XXVI. 163 Primitive limestone of a..semi-crystalline grain. 1871Phil. Mag. XLII. 404 This silica forms a series of semi-crystalline bands parallel with the walls of the fissure. 1882Geikie Text-bk. Geol. ii. ii. §4. 104 Truly vitreous rocks tend to graduate into the..semi-crystalline type. 1927Proc. Physical Soc. XXXIX. 370 In 1924 I [sc. Rutherford] put forward a suggestion that the central nucleus was a closely ordered arrangement of α particles and electrons in a semi-crystalline formation. 1975Sci. Amer. Dec. 99/2 Representative values for the percentage by volume of crystals in a number of semicrystalline polymers are high-density polyethylene, 75 percent; low-density polyethylene, polypropylene and nylon, 50 percent. |