The results showed that the high carboxylated NBR featured high hardness, tensile strength and modulus, good abrasion resistance, but greater permanent set and poorer processingsafety;
The development and transfer of feed, slaughter and processing technologies have increased safety and efficiency, but favour large-scale units rather than small-scale producers.
饲养、屠宰和加工技术的开发和转让提高了安全性和效率，但更有利于大规模的养殖场而不是小规模的养殖者。
3
During this decade, safety in food processing and the environment became issues and laws were enacted.