由于

Although LEDs do experience a gradual and permanent reduction in light output during their normal operating life - caused either by a reduction in the light-generating efficiency of the LED die, or a reduction of the optical path within the LED package - the Dialight street LEDs are expected to provide about 70 per cent of their original light output after 50,000 hours or 10 years, provided that they are not overdriven.

在正常操作下，LED必需要经历光输出逐渐减少的过程，而这个过程是会一直持续着的。导致光输出减少的原因可能是由于LED产生光的效率在降低，或者是由于LED压缩包内的光径在减少。不过，只要没有超负荷使用，Dialigh的LED路灯在工作50，000小时或10年后，还可以达到70%原始光输出的能力。

For it is in giving we receive. It is in pardoning that we are pardoned.

由于我们失掉了，所以我们应当付出，由于我们被宽恕了，所以我们也应当宽恕他人。

The human cartilages are composed of chondrocyte and extracellular matrix,the form of chondrocytes are hypertrophy and the quantity are less;the ECM of cartilage are compised of type II collagen and proteoglycan. Articular cartilages are all hyaline with little fibers. Trauma and arthritis are the main cause of cartilage injury,the ommilayer injury ofcartilage can be recovered by marrow,but because of without stimulation mechanism,the new tissues are merely fibrocartilages,they can not be coincide with hyaline cartilage in menchanics;the purely damage of articular cartilage can not stimulate chondrocyte to regenerate because of without blood circulation,thus,the plerosis of articular catilage can not depend on the proliferation of local chondrocyte.Ever since,people tried their best to find a way to reconstruct articular cartilage.

造成人体关节软骨损伤的原因主要为创伤和关节炎，关节软骨全层损伤可由于骨髓中间充质干细胞的高速增殖修复，但这种修复由于缺乏相应的刺激机制，只能形成纤维软骨，而不能形成符合关节生理、力学要求的透明软骨；单纯软骨部分损伤软骨组织内无血管，软骨细胞迁移迟缓，无法使损伤区域软骨细胞再生，因此，关节炎及关节创伤后的软骨修复不能依赖于软骨细胞的增殖和迁移。

The human cartilages are composed of chondrocyte and extracellular matrix , the form of chondrocytes are hypertrophy and the quantity are less; the ECM of cartilage are compised of type Ⅱ collagen and proteoglycan. Articular cartilages are all hyaline with little fibers. Trauma and arthritis are the main cause of cartilage injury, the ommilayer injury ofcartilage can be recovered by marrow, but because of without stimulation mechanism, the new tissues are merely fibrocartilages, they can not be coincide with hyaline cartilage in menchanics; the purely damage of articular cartilage can not stimulate chondrocyte to regenerate because of without blood circulation, thus, the plerosis of articular catilage can not depend on the proliferation of local chondrocyte.

造成人体关节软骨损伤的原因主要为创伤和关节炎，关节软骨全层损伤可由于骨髓中间充质干细胞的高速增殖修复，但这种修复由于缺乏相应的刺激机制，只能形成纤维软骨，而不能形成符合关节生理、力学要求的透明软骨；单纯软骨部分损伤软骨组织内无血管，软骨细胞迁移迟缓，无法使损伤区域软骨细胞再生，因此，关节炎及关节创伤后的软骨修复不能依赖于软骨细胞的增殖和迁移。

The human cartilages are composed of chondrocyte and extracellular matrix , the form of chondrocytes are hypertrophy and the quantity are less; the ECM of cartilage are compised of type Ⅱ collagen and proteoglycan. Articular cartilages are all hyaline with little fibers. Trauma and arthritis are the main cause of cartilage injury, the ommilayer injury ofcartilage can be recovered by marrow, but because of without stimulation mechanism, the new tissues are merely fibrocartilages, they can not be coincide with hyaline cartilage in menchanics; the purely damage of articular cartilage can not stimulate chondrocyte to regenerate because of without blood circulation, thus, the plerosis of articular catilage can not depend on the proliferation of local chondrocyte. Ever since, people tried their best to find a way to reconstruct articular cartilage.

中文题名人骨髓基质干细胞成软骨诱导及多孔复合材料作为细胞载体的体外实验研究副题名外文题名 Cartilage induction of human mesenchymal stem cells and experiment on compound porous materials as cells' scaffold in vitro 论文作者刘晓岚导师周江南学科专业外科学研究领域\研究方向学位级别博士学位授予单位中南大学学位授予日期2003 论文页码总数68页关键词骨组织工程软骨细胞骨髓基质干细胞壳聚糖高分子外消旋聚乳酸馆藏号BSLW /2003 /R68 /10 造成人体关节软骨损伤的原因主要为创伤和关节炎，关节软骨全层损伤可由于骨髓中间充质干细胞的高速增殖修复，但这种修复由于缺乏相应的刺激机制，只能形成纤维软骨，而不能形成符合关节生理、力学要求的透明软骨；单纯软骨部分损伤软骨组织内无血管，软骨细胞迁移迟缓，无法使损伤区域软骨细胞再生，因此，关节炎及关节创伤后的软骨修复不能依赖于软骨细胞的增殖和迁移。

The application of electronic controls made poss ible by the microprocessor and computer storage ha ve multiplied the uses of the modern typewriter.

电脑储存和由于电子微处理机得以实现的电控运用成倍的增加了电脑储存和由于电子微处理机得以实现的电控运用成倍的增加了现代打字机的功能。

By contrast, the postnominal type of relative clauses represented by zhe-relative in Chinese, that-relative in English and those in Hittite underwent great changes in the history of development that resulted either from extraposing because of the topicalization of relativized noun phrases, or postposing because of the "heavy constituent shift".

相反，后置关系从句在演变过程中或者是由于关系从句的话题化而前移，或者是由于重成分后置原则而后移。

Her right hand, holding a bunch of cocoons, fell by her side listlessly, and her round check was paled, either by the light or by the weariness that was expressed in her attitude; her lips were pressed poutingly together, and every now and then her eyelids half fell: she was a large image of a sweet sleepy child.

她的右手拿着一束茧子，有气无力地垂在身边；她的圆圆的脸颊显得很苍白，或者是由于光线，或者是由于她那姿态所显出的困乏。她的嘴唇微微地噘着，时不时一双眼睛就半垂下来。她真是一个想瞌睡的甜蜜的孩子的大型塑像。

The distance between the skin which the needle stab into and the ligamentum, is (72.2±0.2)mm and between the skin which the needle stab into and the pudenda nerve is (80.2±0.1 ) mm. Conclusion: We should have a specific depth and angle when acupounct into the acupoint of Zhenyang, to make it sure to get the specific feeling of acupunting. The main reason of getting the specific feeling of acupunting is the needle may touch the pudendal nerve.

针刺&振阳穴&产生特殊针感可能是由于直接刺激到了阴部神经，或由于针刺时引起局部肌肉组织收缩牵拉刺激阴部神经所产生的，治疗阳痿的作用机制可能是通过调节大脑皮质和脊髓节段反射来影响阴茎勃起功能的。

Four quadripolar electrode catheters were inserted percutaneously and advanced under fluoroscopic guidance to the high right atrium, coronary sinus, right ventricular apex, and atrio-ventricular junction for recording of the His bundle electrogram.

ATP可终止由房室或房室结折返所致的宽QRS性SVT和可能是由于触发的自律性增高所致的宽QRS的VT，但对于由于折返机制所致的VT以及房颤和房扑则无疗效。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。