有角

In this paper,the power coupling efficiency of semiconductor laser passing through a collimating system is discussed.

在长距离无线光通信中，接收点光功率密度与光束发散角平方呈反比关系，为了获得小的发散角和大的功率耦合效率，要求准直系统有较大的数值孔径，但数值孔径过大会增加像差，因此合理设计功率耦合效率与准直系统的数值孔径就非常重要。

Mean ApoL I of keratinizing types(15.77±4.34) was significantly higher than those of nonkeratinizing types (8.03±1.70). The ApoL I increased from 6.51±0.58 with poorly differentiated cancers through 10.58±2.90 with moderately differentiated cancers to 18.41±4.49 with well differentiated cancers. There was no apparent correlation between ApoL I and sex, age, tumor size, tumor location and tumor infiltrative depth. The Kaplan-Meier survival curves between ApoL I＜10‰ and ApoL I≥10‰ have significant difference, while the former has a shorter survival time.

角化型ApoL I高于非角化型(P＜0.01)；肿瘤分化越好，细胞凋亡越多，低度、中度、高度分化ApoL I有差异(P＜0.05)；不同性别、年龄、肿瘤部位、长度、深度，其ApoL I并无差异；以10‰为界将ApoL I分组绘制Kaplan-Meier生存曲线，ApoL I≥10‰组术后生存率高。

"Long-term skin cancer and actinic keratoses surveillance continue to be important,and repeated resurfacing procedures or courses of topical agents,such as fluorouracil or imiquimod, may be necessary," the researchers write."A largerstudy comparing trichloroacetic acid resurfacing for actinic keratoses reductionand nonmelanoma skin cancer prophylaxis would help validate the superiority ofthis resurfacing technique over the carbon dioxide laser andassess its cost-effectiveness compared with photodynamic therapyor imiquimod treatment." They cite improved patient compliance in the trichloroacetic-acid group, ease of performance in the outpatient setting, andsubjective measures of better tolerance as reasons this procedure is an attractive alternative to repeated courses with topicalagents or laser resurfacing.

研究者指出，长期皮肤癌和光化性角化病之监测仍是重要的，反覆的皮肤重建整形步骤、或外用制剂如fluorouracil 或 imiquimod的反覆疗程也可能是必须的；一个比较三氯醋酸皮肤重建整形以减少光化性角化病和预防非黑色素皮肤癌的大型研究，将可有助於确定其优於二氧化碳雷射的优势，以及评估其和光动力治疗或 imiquimod治疗之花费效益比比较；他们举例说，三氯醋酸组病患之遵医嘱性增加、门诊病患也容易进行、个案之测量耐受度比较佳，这些都是重复疗程时比外用药剂或雷射更有吸引力的理由。

The inside wreath subway stands the C exports The prosperous Cape in Centre in Kok in Mong center is prosperous Cape a large market, occupying four levels accumulate, the store quantity is many but 密, sell of is young man that shoes and socks clothes that small jewel in current, have again latest hour style, cheap, so draw on a the little girl of 众 loiters.

中环地铁站 C语言出口 Mong Kok 中心旺角中心是旺角一个较大型的商场，占有四层面积，商店数量多而密，卖的是年轻人的鞋袜衣服，又有最新时款的潮流小饰物，价钱便宜，所以就吸引了一众小女孩流连。

At first, an ordinary gear train composed of two gear pairs is analyzed. The constituting principle and the equivalent gear pair of a ordinary noncircular gear train are studied under two assembling circumstances, including phase angle exists between two gear pairs or not.

以分析两对齿轮副构成的定轴轮系为非圆齿轮机构分析的起始点，本文首先分析了两对齿轮之间有相位角与无相位角两种安装情况下，定轴轮系的构成原理与轮系等价齿轮副的传动关系。

, after the axle journal begins to rotate, the characteristic angle of oil film and the original geometric angle of pad have the following relationship

由图1可知，轴颈开始旋转后，油膜特征角与瓦块原始几何角有如下关系

Mode 5 has the higher gains, so it is used only at the end of the acquisition sequence, when the azimuth error can be big, or when the spacecraft has been subjected to disturbances that cause the azimuth error to go over its threshold.

模式5有较高的得益值，所以它只有在当进动序列结束、当方位角错误太大、或是当航空器受到干扰导致方位角错误超过门槛值时才会被使用。

The results show that cutting tools and cutting parameters had an important influence on the quality of the fiber in the planing process of metal fiber. The larger rake angle and appropriate clearance angle of tools favored to fabricate metal fiber. Back engagement influenced the forming process of metal fibers most greatly, feed rate and cutting speed varied little.

研究结果表明：在金属纤维刨削成形过程中，刀具参数和切削用量对纤维的质量有重要影响，较大的刀具前角和合适的刀具后角有利于纤维的成形，而背吃刀量对金属纤维的成形影响最大，切削速度和进给量的影响则不明显。

The fracture angle、height of roof coal and support chute which effect on the rules of caving coal are studied completely.

针对煤矿放顶煤工作面特点，建立了在有边界条件约束下的放出体多元数学模型，全面分析了顶煤垮落角、放煤高度、放煤口位置对放煤基本规律的影响，阐明放出椭球体轴偏角的产生与计算方法。

The main products are: mechanical screen: Coal mine machinery equipment clean-ball machine-net-cage hook spent network of diamond-hexagonal network of withholding machine gill nets of gill nets-steel blade of welded wire mesh net-filter - Wu Suo-screen machine woven metal mesh-knit network of high-speed machines for heavy hexagonal-block for block-knit network of stainless steel mesh screen products, and so on.

主要产品有：丝网机械：煤矿机械煤矿设备清洁球机石笼网机勾花网机六角网机菱形网机扣丝机刺网机刀片刺网机钢板网机电焊网机过滤网机无梭机丝网机械织网机金属丝网编织机重型六角网机高速护拦网机护拦网机不锈钢网编织机丝网制品丝网等等。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐