三点的

Optimal screw path length: The distance from the optimal entrancepoint to the optimal vent point Screw tail distance: The distance between left and right optimalentrance point Transverse section angle: Half of the included angle between left andright optimal screw Sagital section angle: The average of angle between both side optimalscrew with the upper terminal plate 1.2.2 Modify the threshold of CT value to distinguish the rear partof the lumbar, Observate the the optimal entrance point and the adjustable range.

1.2.2三维重建观察螺钉最佳进钉点的位置和各方向螺钉进钉点关系，调整CT值下限阈值使椎弓后部结构尽量显示清晰，以利观察。 1.3统计方法本实验采用SPSS13.0统计软件。对同一椎体左右两侧椎弓根螺钉相对数据行计量资料配对样本t检验，对男女组间相关数据行计量资料独立样本t检验，对男女组内不同腰椎节段间相关数据行单向方差分析及不同腰椎节段间LSD法多重比较。

Your flight is 9:00 AM and arrive in New York at 3:00 PM.You are bound to get in the airdrome one and a half hours before.

您搭乘的飞机是早上9点起飞，下午三点抵达纽约，您必须在飞机起飞前至少一个半小*抵达机场。

Your flight is flight at 9:00 am, arrives at 3:00 pm You must arrive the airdrome at least half and a hour before the flight takes off.

您搭乘的飞机是早上9点起飞，下午三点抵达纽约，您必须在飞机起飞前至少一个半小时抵达机场。

You have to arrive at the airport at least one ane half hours before the plane takes off.

您搭乘的飞机是早上9点起飞，下午三点抵达纽约，您必须在飞机起飞前至少一个半小时抵达机场。

If you see a blur after 3 o'clock, that'd be me.

如果你三点之后看到一个模糊的小光点，那就是我了。

You must arrive at the airport at least one and a half hours before the plane takes off.

您搭乘的飞机是早上9点起飞，下午三点抵达纽约，您必须在飞机起飞前至少一个半小时抵达机场。

You should reach the airport one hour and a half before the plane is taken off.

您搭乘的飞机是早上9点起飞，下午三点抵达纽约，您必须在飞机起飞前至少一个半小*抵达机场。

A hour and half earlier when the plane takes off.

您搭乘的飞机是早上9点起飞，下午三点抵达纽约，您必须在飞机起飞前至少一个半小时抵达机场。

Moments later, a neighbor threw open her window and shouted ,"Keep it down! Don't you know it's three o'clock in the morning?"

不久，有一邻居敲开他们的窗并尖叫着，"小声点，你们不知现在是早上三点吗？"

The plurality of calculating nodes is configured on 3-d lattice points and forming link with adjacent nodes of the lattice point.

多个计算节点被安排在三维格点处并与格点的相邻节点形成链路。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。