Biosafety level 3 containment requires special engineering and design features as well as heightened safety standardsandpractices.
生物安全3级的控制要求有特殊的工程设计以及强化的安全标准和操作。
2
Changess in pronunciation often follow current events, according to Mark Memmott, National Public Radio standardsandpractices editor.
全国公共广播电台标准和规范编辑马克·梅莫特说，读音的变化往往紧跟时事。
3
On the basis of fire standardsandpractices the fire hydrant system, pressure stabilizing apparatus and fire pumps are discussed and design criteria are proposed.