In order to meet the need of viscosities measurement for volatile liquid such as refrigerants, a new improved Ubbelohde-Type capillary viscometer was provided with its maximum endurable pressure to be 10 MPa. 针对制冷工质等挥发性液体黏度的测量需要,研制了一种新的改进型Ubbelohde毛细管黏度计;它的最大设计耐压能力为10MPa。
Organisms can be promoted to evolve when given endurable pressure, meanwhile it will suffer from fatigue or illness if the pressure overruns its utmost ( critical point). 极限环境促使生物向适应极限的方向进化:在生物机体能承受的范围内给予压力则促进进化,若超过了机体能承受的范围(极限、临界点),则会造成机体的劳损或疾病。