估算

R : S ratio （belowground to aboveground biomass ratio） has been widely used for estimating root biomass.

利用根冠比和地上生物量来估算地下生物量是目前常用的方法，但目前缺乏根冠比的数据。

For the 592 chemicals, the coefficient of determination of the regression model was as high as 0.9696 with a mean absolute error of 0.37 log-unit.

对所有592种化合物而言，模型的可决系数高达0.9696。估算结果的平均绝对误差仅为0.37个对数单位。

After the airdrop experiments of the system of the projectile and speed-down parachute, the balance velocity obtained from the optics apparatus on the ground、the balance spinning speed obtained from the gyroscope on the projectile and the image obtained from the infrared detector on the projectile are all used to simulate the six-dimension exterior trajectory of the projectile and identify the roll damping moment derivatives, and the identification can safely come to a conclusion that the absolute value of roll damping moment derivatives from the engineering calculation are on the low side.

对卷弧尾翼弹与减速伞系统进行空投试验，由地面光测系统给出平衡落速、弹上陀螺给出平衡转速、弹上红外探测器拍摄地面图像判断弹的姿态。通过六自由度弹道模拟，对弹滚转阻尼导数进行参数辨识，得到工程估算所得滚转阻尼导数绝对值偏小的结论。 5。对空投试验中出现弹姿态摆动现象，从受力分析及红外图像分析两个方面进行探讨，给出合理解释，并根据分析对弹外形进行修改，在后来的试验中收到很好的效果。

The author deduced a formula to compute theaccidental coincidence of the random signals. With this formula thebackground due to the accidental coincidence of the μ chamber iscalculated.

推导了多个随机信号发生偶然符合的计数率计算公式，并用这个公式对L3μ漂移室产生的偶然符合本底进行了估算。

If you want an accounting of your worth.

如果你想估算一下你的价值。

Richard ach If you want a accounting of your worth, count your friends.

如果你想估算一下你的价值，数一数你的朋友吧。

The economic loss is caculated in the south of the acid rain area and it is proved that economy is badly affected by the damage to the materials caused by acid precipitation.

在此基础上，本文进一步对南方酸雨区进行了估算，证明了酸沉降对材料的破坏对经济产生了严重的影响。

Estimation of the corrosion losses by the acidic rain in China .

中国的酸雨对材料腐蚀的经济损失估算。

The octane number of 5 substances were predicted using the new methods.The results show that the second level group contribution method exhibits significant improvements in accuracy and should be used for estimating the octane number of branched and ring hydrocarbons.In cases of simple straight chain bydrocarbons, however,the first level group contribution method should be used.

用新方法对未参加回归的五种物质的辛烷值进行了预测，结果表明对于含有支链和环的烃应采用第二水平基团法估算其辛烷值，对简单的直链烃采用第一水平基团法估算其辛烷值。

In chapter 3, based on the analysis of tradional methods, the methods of time delay estimation and phase estimation via HOS is presented.

第三章在分析传统方法的基础上，将高阶统计量引入到延时和相位估算中，提出了基于HOS的延时估算方法和检相方法，获得了较好的延时和相位估计效果。

With the development of highway construction, the speed of cars has been gradually increased.

随着公路的发展，汽车的车速也在不断提高。

So we basically had to develop a bond with the animal in terms of socializing with it.

所以我们就主要想通过跟它沟通的方式来建立一种良好的关系。