子午线

This paper reported a new method using tangential curvature to establish a mathematical model of the anterior cornea and an analysis of the regularity of the distribution of the asphericity Q. The curvature in the horizontal meridians is a prolate ellipse. The curvature in the vertical meridians is an oblate ellipse. The curvature of the horizontal meridians is important for anterior corneal asphericity.

本研究分析了运用正切曲率半径值建立人眼前表面角膜数学模型的科学性，显示角膜前表面水平子午线方向非球面性趋向于长椭圆，垂直子午线方向非球面性趋向于扁椭圆，说明人眼角膜的非球面性特性主要由水平子午线实现。

A carpel with one seed; one of a pair split apart at maturity meridian

n。 子午线，经线，顶点a。子午线的，日中的，顶点的

The angular distance along the celestial equator from the observer's meridian to the hour circle of a given celestial body.

从观测者所在的子午线到给定天体的子午线沿着天赤道的角距离。

The time in any of 24 time zones, usually the mean solar time at the central meridian of each zone. In the continental United States, there are four standard time zones: Eastern, using the 75th meridian; Central, using the 90th meridian; Mountain, using the 105th meridian; and Pacific, using the 120th meridian.

标准时：24个时区的任何一个时区，通常指每个时区中间子午线的平均太阳时间在美国大陆有4个时区：东部时区使用第75度子午线；中部时区使用第90度子午线；山区时区使用第105度子午线；太平洋时区使用第120度子午线

Of or relating to a meridian; meridional .

经线的，子午线的子午线的或与子午线有关的；经线的

The empire in its meridian period.Of or relating to a meridian; meridional.

经线的，子午线的子午线的或与子午线有关的；经线的

Distributions of corneal curvature With the formula 〓 Sin〓αwhich is about the curvatures of oblique meridians on toric surface, the theoretical values of anterior, posterior and total corneal radius of curvature of the oblique meridians were obtained.

3角膜曲率分布根据托力克面斜轴子午线曲率F'计算公式〓，确定角膜前、后表面斜轴子午线曲率及斜轴子午线总角膜曲率的理论值，并通过分析该理论值与实测值之间的一致性，明确角膜曲率分布特征。

The characteristics of meridian tyre are high speed, saving oil and wearability.

影响子午线轮胎发展的因素2 0 0 1年国家免征子午线轮胎消费税后，子午线轮胎的发展速度加快。

The prime meridian is used as a reference line from which longitude east and west is measured.

本初子午线通过英国格林威治的零度子午线，用作参考经线，从本初子午线开始分别向东和向西计算全世界的地理经度

First,the paper summarized and analyzed the definition of the earth prime meridian in different periods,clarified the ambiguous recognition that the earth prime meridian was the meridian passing Greenwich astronomical observatory and gave the rigorous definition about the Earth prime meridian presently.

首先对地球首子午线在不同时期的定义进行了分析和总结，进一步明确了当前对地球首子午线的严格定义，澄清了地球首子午线即过格林尼治天文台的子午线这一模糊认识。

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％。