岩浆是形成在地球的深部，它是熔融的物质的混合物。
Magma occurs deep within the earth and is made up of a mixture of molten mineral materials.
将聚丙烯和石蜡油的混合物熔融挤出，使之在较高的应力场下冷却和相分离，得到了弹性聚丙烯中空纤维。
Elastic polypropylene hollow fibers were obtained from the blend of polypropylene and paraffin oil which was extruded in melt and then cooled in a high stress field (phase separation occurred).
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