The adaptation of Boer Goat with its performance in northsemitropical and variable zone was discussed.本文根据我国北亚热带和北温带引进的波尔山羊的生产性能表现,讨论了其引种适应性.In the study, de Boer and colleagues analyzed data on about 1,300 type 1 diabet...
Multifold techniques and methods of anti - icing and deicing are summarized.总结了目前国内外提出的多种 防 冰除冰技术及方法.Concrete, salt ( deicing agent ) penetration, and irreversible loss of concrete tensile strength.混凝土, 盐 ( 除冰剂 ) 的渗透, 和不...
等容粒径在沉沙输移中意义不大.The nominal diameter has little significance in sediment transportation.“等容粒径”是某一球体直径,它与某已知的颗粒体积相等.Nominal diameter is the diameter of a sphere of the same volume as the given particle.最高气缸压力高的循环燃烧速率快、燃烧过程...