根据峰形和峰数的变化，描述蛋白质的伸展程度；
The expansion extent of protein may be described using changes in peak shape and peak number.
油气藏的类型主要受控于裂陷盆地的伸展程度、同生断层及沉积相带。
The types of hydrocarbon pools are mainly controlled by the extension of rifted basin, contemperaneous faults and sedimentary facies.
躺在床上是伸展手脚和背部，伸展运到可减轻腰部、腿、后背直到颈部的紧张程度；
Stretching can help to relieve tension in your lower back, legs and up to the back of your neck.
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