松弛时间

The chemical activating mechanism of UA is that CG can stimulate pozzolanicity more effective than gypsum because of higher solubility and looser crystal structure; but CG has poor property on retardation setting, and this shortage can be solved by mixing with gypsum; CS can offer alkali activity, which can depolymerize silica and aluminum glass, and benefit for other activity methods and overcome the disadvantage of HF on setting time; Sodium sulfate improves early strength greatly but loses the final strength. NF can improve both early and final strengths.

联合激发技术的化学激发机理是，煅烧石膏溶解度高及晶体结构松弛，比天然石膏的活性激发效率高，但降低石膏的缓凝作用，与天然石膏混合既可提高活性又能保持缓凝作用；干法电石渣提供碱激发，促进高钙灰中硅、铝玻璃体解聚，并克服高钙灰对凝结时间的不利影响；硫酸钠虽然早强作用明显，但使后期强度倒缩，NF使各龄期活性都得到提高；磨细的物理激发使高钙灰大颗粒中的CaO和富集碳组分被磨细、分散，活性增加而危害性降低。

Relaxation was measured as the time constant of LV pressure decay by micromanometer.

微量测压计检测一定时间内左室压力衰减以衡量心脏松弛性。

Using semidefinite programming relaxation and randomized rounding, we give the corresponding polyniomal approximation algorithms for some NP-hard combinatorial optimization problems.

我们对于一些NP-难的组合优化问题，采用半定规划松弛和随机舍入的方法设计了多项式时间的近似算法，这些算法的性能比都是目前为止最好的结果。

In order to solve the technical problems of cold pressing of de-hulled double-low rapeseed ,a new twin-screw press with a principle of combination of joggling and non-joggling was designed and manufactured,the pressing chamber of which had characteristics of multiple-stage compression and relaxation and a thin layer of when pressing.

为实现双低菜籽脱皮后的冷态压榨，研制了一种双螺杆榨油机，采用啮合式和非啮合式相组合的原理，在榨膛内实行多级压缩和松弛及薄料层压榨，其理论压缩比达23.0，榨膛长径比达11.5，压榨时间达180 s，并具有强大的物料自清功能，解决了脱皮菜籽仁在榨膛内输送困难的问题。

Atracurium besylate is a new non-depolarizing neuromuscular blocking agent with an intermediate duration of action.

阿屈宁是一种新型的非去极化类骨胳肌松弛剂，其作用持续时间中等，肌松效应能为胆硷酯酶抑制剂确切地拮抗。

Atracurium besylate is a new non-depolarizing neuromuscular blocking agent with an intermediate duration of actio...

阿屈宁是一种新型的非去极化类骨胳肌松弛剂，其作用持续时间中等，肌松效应能为胆硷酯酶抑制剂确切地拮抗。

Main observation target:Observe the stress relaxation data and curve,the Stress and time change rule.

主要观察指标：观察应力松弛数据和曲线，应力与时间的变化规律。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失