When blend modification of HTPB and PU are done, the apparent crosslinking density of PU matrix in - creases, and the tensile strength of propellant enhances.

将端羟基聚丁二烯与聚氨酯进行共混改性，提高了聚氨酯基体的表观交联度及推进剂的拉伸强度。

youdao

The crystal lattice parameter of PP matrix in the PP/EVA blend was measured.

结果表明，PP/EVA体系中PP基体的晶胞参数以及结晶性能不受EVA的影响；

youdao

While the action is spectacular -- after all, the choreography was handled by kung-fu master Yuen Woo-ping, whose credits include Drunken Master and most recently The Matrix -- what really makes Crouching Tiger a gem is the wonderful blend of nostalgia, stunning cinematography, a fast-paced plot, and -- yes -- a good story.

CNN: From Our Correspondent: Movie with a Message