It was discovered that IQ fastigium age was before 7 years and there was a falling gradient in IQ between 8-10. As a conception of "warning age" in IDD area and that of "key age" for prevention and treatment were established.

1、

Since Lancang river belongs to the typical mountainous rivers. The waterway equipped with rapid flow, large falling gradient and many bends.

澜沧江属于典型的山区河流，航道普遍存在着水流急、比降大、弯道多的特性，这些严重地威胁着船舶航行的安全。

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2、

Research shows, on mountain highway with varied falling gradient, the continuous brake mode affected together can make vehicle travels steady in the speed range.

研究表明，在坡度不断变化的山区公路上，联合作用的持续制动方式可以使汽车在上述速度范围内稳定行驶。

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3、

Children's Prediction of the Track of Objects Falling with Velocity and Its Significance for Early Childhood Education

幼儿对具初速度物体下落轨迹的预测及其学前教育意义

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4、

The calculation results show that pavement types have positive influence on thermal regime in permafrost embankments, and concrete pavement can effectively decrease pavement temperature, delay falling velocity of permafrost table, and protect the permafrost under embankments effectively.

结果表明：路面类型对冻土路基温度场有着重要影响，水泥路面的采用可有效地降低路面温度，延缓冻土上限下降速率，从而可以有效保护基底多年冻土；

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5、

In order to increase the falling velocity of sediment particles in the muddy water discharged from a clarification station of a coal-fired power station, polyacrylamide ( PAM) was added into the muddy water.

电厂净化站排出的泥水加入高分子聚丙烯酰胺（PAM）絮凝剂后，改变了泥沙颗粒的自然沉速。

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6、

An improvement to the falling velocity formula of the large-diameter raindrop in the simulated rainfall

人工模拟降雨中大粒径雨滴着地速度公式的探讨

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7、

The particle falling velocity is an important parameter in the two-phase flow.

颗粒沉速是两相流动中的重要参数。

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8、

A New Method for Calculating Particle Falling Velocity

颗粒沉速新解法

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9、

Above the separator, the max value of average falling velocity along the vertical direction is near to the right side of the flow-guiding cone ( while the inlet is at the leftside).

在分离器上部，垂直方向的平均下落速度的最大值靠近导流锥体的右侧（进口在左侧时）。

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10、

Eastward deflection of a free falling body seen from an inertial system

在惯性系中分析落体偏东现象

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11、

Study of the damped motions of falling body in analytical mechanics

阻尼落体运动的分析力学研究

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12、

Research on the errors in the experiment of measuring g with the falling body method

落体法测g实验误差的研究

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13、

Research on Physical Method in Education from Galileo's Free Falling Body Theory

从伽利略对自由落体的研究谈物理方法教育

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14、

A study of the free falling body by using gradual approach method

用逐级逼近法研究自由落体

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15、

Falling Body Method of Measuring the Moment of Inertia

落体法测定转动惯量

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16、

Comparison of different methods of measuring rigid body inertia by the falling body law

落体法测刚体转动惯量的测量方法比较

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17、

Type ⅱ sequence interface was formed when the basement nonlinear subsidence speeded up and the tectonic subsidence acceleration was bigger than or equal to lake level falling acceleration.

Ⅱ型层序界面是在基底非线性加速沉降，并且构造沉降加速度大于或等于湖平面下降加速度的背景下形成的。

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18、

The falling steak's speed would steadily drop as the air gets thicker.

随着空气密度越来越大，牛排下落的速度也会逐渐下降。

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19、

Power Brake Falling Load and Speed Regulation

单纯用动力制动下放位能负载及其调速

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20、

Based on the time concepts of falling speed of preliminarily crushed materials and roll ′ s pressing on materials, the formula for roll press can be derived from that of conven-tional roll crushers.

因此应用粗碎物料的下落和辊子挤压物料的时间概念，能够从辊式破碎机的转速推导出棍压机的转速公式。根据辊式破碎机的生产资料。

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