光学纤维束

A soft,cushionlike pad on the foot of an insect,such as the housefly ,by which it clings to a surface.

昆虫的复眼实际上是一束丝状的锥形光学纤维丝束。

When the retted straw is dried, the fibre bundles shrink away from the brittle woody sore.

当烘干时被浸泡的秸杆，光学纤维束纤维丛收缩远离易碎的木质的痛处。

Results showed that, the specific refining energy consumption is decreased with increment of rotation speed of the primary refiner. At freeness level of about 670 mL CSF, for example, the specific refining energy consumptions is 363 kWh/t o.d. at 3000 r/min, and 305 kWh/t o.d. at 3500 r/min, which is equivalent to 16% energy saving, furthermore the specific energy consumption is only 265 kWh/t o.d. at 4000 r/min, which means 27% less refining energy required. At the same time, pulps produced at higher refiner speed have higher strength properties and lower shives contents. There is little change of optical properties of the pulps.

结果表明：小叶桉物料在相同条件下进行汽蒸、挤压和化学预浸渍后，分别采用3500 r/min和4000 r/min的盘磨转速进行第一段磨浆，浆料磨至游离度670 mL时所需磨浆电耗与3000 r/min时的相比，分别下降16%和27%；浆料中纤维束含量分别降低20%和35%；第一段磨后浆料再分别经相同盘磨转速（3000 r/min）的后续磨浆后，与相近游离度的浆料性能比较可知，随第一段磨浆盘磨转速的提高，浆料的细小组分含量略有增加，纤维束含量显著降低，强度性能有不同程度的改善，但光学性能变化不显著。

The relationships between strain and stress of several kinds of high strength fibers, such as Kevlar, Twaron and Dyneema were obtained, and the dependence of mechanical properties of fibers on the strain rate was gotten and explained from the microstructures and deformation mechanism of fibers. Then, the damage and failures of plates with the reinforcement of fibers under high velocity impacting were studied experimentally. Based on experimental results, a set of equations was presented to depicted the deceleration of penetrator. The dynamic response of fiber cluster and sandwich were simulated successfully with a new algorithm and code, which was developped by our group. The coupling effect of stress wave and thermal conduction could be considered with acceptable accuracy and CPU time.

其中，获得了以芳纶纤维为代表的7种纤维的动态应力应变关系，从材料微观机制解释了纤维束的应变率相关特征；得到了板材在高速冲击下的能量吸收机理，以及影响能量吸收机制转变的主要因素；发展了一种新型的原位光学测试技术，以之可以测量试件在冲击加载下的变形场及其演化，该技术除了在本项目应用外，还可以对剪切带的萌生演化、孔洞动态扩张规律进行较好的观察，以弥补相关研究中实验证据的缺乏；发展了含热传导的冲击动力学有限元程序，在侵彻、绝热剪切带、脉冲激光诱导结构破坏等问题的分析中得到了较好的应用。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。