子午线

Analyses of loci in the π plane and meridian line s show that the parabolic and hyperbolic type failure envelopes have no influences on the shape of the.

对改进式所作的π平面极限线和子午线分析表明，采用抛物线和双曲线形强度包络线基本上不会改变原准则在π平面上的极限线形状，但子午线由直线改为曲线，极限面在主应力空间内分别为抛物面和双曲面，其锥顶距坐标原点也比采用线性强度包络线的要小。

We can think of spherocylinders as a flat sphere and a flat cylinder glued together. They have power meridians of maximum and minimum , called primary merdians.

6可以想象，球柱面透镜有如一个平球面透镜和一个平圆柱透镜黏结在一起，具有最高和最低焦度的子午线，称为主子午线。

The FEA for the temperature field in radial tire structure is described,the temperature field distribution in 9 00R20 tire under certain conditions is analysed with the FEA method and the temperature profile and curve of the tire structure are given.

介绍了子午线轮胎结构温度场的有限元分析方法，并分析了 9 0 0R2 0子午线轮胎在特定条件下的温度场分布，给出了轮胎温度场分布图和温度分布曲线。

The Tropic of Capricorn lies at 23.5° South of the equator and runs through Australia, Chile, southern Brazil (Brazil is the only country that passes through both the equator and a tropic), and northern South Africa.

英国的制图学家使用经过伦敦格林维治天文台的子午线作为起点，过去其他国家或人也使用过其他的子午线做起点，比如罗马、哥本哈根、耶路撒冷、圣彼德堡、比萨、巴黎和费城等。

SIA degree in phacoemulsification with 3.2mm clear corneal incision has no connection with incision positions. Corneal curvature at incision meridian will be released, but another meridian has no distinct effect. The SIA analyzed by Jaffe/Clayman vector method will provide an important reference for toric IOL implantation surgery.

3.2mm透明角膜切口SIA的度数与切口位置无明显关系，切口对所在子午线角膜曲率有松解作用，对与切口垂直子午线角膜曲率无明显影响，矢量公式法计算所得的SIA值在散光型人工晶状体植入术中提供了重要的参考价值。

MineMaster OTR Tire , 1ST UK Manufactured/Distributed Giant OTR Tire , in radial and bias , warranty on each tyre , full liabilty insurance , certificate of working hours , 5000 guarnteed on radial , 3000 working hours on Bias , sizes from 2700 to 4000R57 , smaller bias available , available in heat and cut compounds , available on monthly contract , full back up service and customer after sales suport , 30-120 dyas credit available from shipment.

MineMaster工程机械轮胎，第一家英国制造和经销的巨型工程机械轮胎，子午线轮胎和斜交轮胎均有供给，每个轮胎都提供质保、全额责任保险、工作时间凭证，子午线轮胎确保5000小时，斜交轮胎为3000小时，尺寸从2700至4000R57。小型斜交轮胎可选，经加热和切割处理的踏面胶料可选，可按月签合同，提供全面的备用服务和售后客服，装运后提供30-120天信贷。

MineMaster OTR Tire , 1ST UK Manufactured/Distributed Giant OTR Tire , in radial and bias , warranty on each tyre , full liabilty insurance , certificate of working hours , 5000 guarnteed on radial , 3000 working hours on Bias , sizes from 2700 to 4000R57 , smaller bias available , available in heat and cut compounds , available on monthly contract , full back up service and customer after sales suport , 30-120 dyas credit available from shipment.

MineMaster工程机械轮胎，第一家英国制造和经销的巨型工程机械轮胎，子午线轮胎和斜交轮胎均有供应，每个轮胎都提供质保、全额责任保险、工作时间凭证，子午线轮胎确保5000小时，斜交轮胎为3000小时，尺寸从2700至4000R57。小型斜交轮胎可选，经加热和切割处理的踏面胶料可选，可按月签合同，提供全面的备用服务和售后客服，装运后提供30-120天信贷。

Methods Keratometric reading with Topcon KR-8100 automatic keratometry and comeal topography with the TMS-4 on 53 ametropia' children, 106 eyes were compared. Difference in measurements of steep meridian power magnitude Ks, flat meridian power magnitude Kf, astigmatism magnitude Ks-Kf and location as well between the two methods were assessed using paired t test.Bland-Altmann method was used to evaluate the agreement of the two methods.

采用KR-8100自动角膜曲率计及TMS-4角膜地形图仪对53例（106只眼）屈光不正儿童进行测量，应用配对t检验对两种方法测量的陡峭子午线角膜屈光力、平坦子午线角膜屈光力、角膜散光Ks-Kf大小及轴向进行比较，并应用Bland-Altmann分析对两种测量方法进行一致性评价。

Then, since Washington is 77deg 3′ 11 as much as to say seventy-sevendegrees counted from the meridian of Greenwich which the Americans take fortheir starting-point for longitudes concurrently with the English–itfollowed that the island must be situated seventy-seven and seventy-fivedegrees west of the meridian of Greenwich, that is to say, on the hundredand fifty-second degree of west longitude.

华盛顿的经度既然是77度3分11秒，也就是从格林威治子午线——美国和英国都以格林威治为经线的起点——算起的第77度，由此可以算出：海岛一定在格林威治子午线以西77度加75度，也就是西经152度的地方。

By 3000 strands, there are small meridians where there were none before between the points of light.

达到3000股DNA，在以前没有子午线的光点间开始形成小的子午线。

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％。