The cost is high and the error is big in volumetric flow measurement method and velocity measurement.
容积式流量测量方法和速度式流量测量方法存在费用高，误差大的缺点。
It is stated that the present physical model is imperfect owing to the neglect of the dimension error, especially when the error is big.
指出现有的计算模型由于忽略了尺寸误差是不完整的，在误差较大时尤其如此。
But the bar for mistakes at big Oil companies is so high, it's hard to imagine how big an error would have to be to actually take one of them down.
不过，石油巨头犯错的门槛如此之高，因此，很难想象，到底得是多大的错误才会导致它们其中的某一家轰然倒下。
The medicine with no use or big side effect will be removed or decreased, that is what we said trial and error.
而经验是建立在试验和统计的基础上，在某些方面有可能做得不一定非常准确，但其逻辑是可以进行调整，没有用的药或者副作用大的药会被取消，或者被减量，这就是试错。
The existing density compensator model does not fit high temperature and pressure saturated vapor, the density compensator precision is low and causes big error in saturated vapor measurement.
现有的密度补偿模型不适合高温高压饱和蒸汽的流量测量，密度补偿精度较低，导致蒸汽流量测量误差较大。
Big error occurs when such plastic strain is simplified as the linear function of displacement.
若将其应变简化为位移的线性表达式，则存在着很大的误差。
On the other hand, when using Microscopic Traffic Model to describe the action of vehicles and stimulate the traffic in a meticulous way, the error will be big if the mimic time is long enough.
相反微观交通模型通过描述车辆个体行为，对交通状况做出较为细致的模拟，当模拟时间长度过大，与现实交通状况之间的误差越来越大。
To overcome the long test time and big error in single variable open loop step test method, a novel identification method based on asymptotic theory (asym) is presented.
为克服传统单变量开环阶跃测试法测试时间长和误差大的缺点，提出一种基于渐进黑箱理论的多变量辨识方法。
The result of check demonstrate that the model simulated error of evaporation time-space change law is fewer, it have stronger adaptation in big scope.
检验结果表明，该模型对水面蒸发时空变化规律的模拟误差较小，在大范围上具有较强的适应性。
Against the big error of height determination for the reentry vehicle because of the information provided by low precision geomagnetic sensor, a novel real-time prediction method is proposed.
针对于目前地磁传感器测量精度较低，将其信息直接用于飞行器再入段定高误差较大的问题，提出了一种在线预测进行定高的方法。
The results show that, for relatively shallow embedded tunnel, a big error would occur if the surrounding rock pressure of the vault is regarded as uniformly distributed.
结果表明：对于埋深较浅的隧道，如果拱顶围岩压力按均布进行计算，结果会产生较大误差。
These conventional control survey method work loads very big, work time long, condition influence and so on the climate, environment is been remarkable, moreover the error accumulates remarkably.
这些常规的控制测量手段工作量大，作业时间长，受气候、环境等条件影响显著，而且误差积累显著。
A method to limit the amplification in a certain range is proposed for restricting the big estimated error of pitch attitude angle.
本文还提出了限定增益系数的方法，以抑制俯仰角过大的估计误差。
It has been proved by experiment that the traditional Angle measurement algorithm of the detector with four quadrants is of big measurement error.
实验结果表明，传统的四象限探测仪测角算法具有较大的误差。
But when the sampling frequency of successive-approximation ADC is too high, the switched capacitor can't be charged properly. And this will result in too big conversion error.
但当逐次比较式adc的采样频率过高时，会使其内部采样保持的开关电容充电不充分，从而导致ADC转换误差过大。
Slope of destruction often associated with large displacement and plastic strain, therefore, the traditional small-deformation finite element method is no doubt big error.
边坡的破坏往往伴随着很大的位移和塑性应变，因此，采用传统的小变形有限元方法计算无疑误差较大。
It is difficult to evaluate the failure extent of previous fractures in refractured gas Wells, which results in a big error in productivity prediction.
由于重复压裂气井原有裂缝的失效程度难以评价，导致重复压裂气井的产能预测常常有很大的误差。
And electric steady also is introduced to estimation of rotor position, which solves effectively the problem of big error on rotor position estimation in process of dynamic.
同时将电气稳态的概念引入转子位置估计中，有效地解决了电机在稳态情况下转子位置估计误差大的问题。
The wind error retrieved with VAP method mainly focus on tangential velocity, sometimes the error is very big.
VAP法反演的二维风场，误差主要集中在切向分量，有时误差是很大的。
Rhodamine is usually determined by spectrophotometric method, but it results in big error.
碱性玫瑰精通常采用分光光度法测试，但测试误差较大。
This method being complicated can only approximately estimates the value of static inductance, and the error is rather big.
这种方法计算比较繁琐，只能近似估计静态电感值，误差较大。
Further analyzing the effect of channel estimation error on the detectors, it is found that the multiuser detector is more sensitive to big estimation error than the single user detector.
文中迈进一步仿真分析了信道估计错误对检测器的影响，发现对于较大的信道估计错误，多用户检测器比单用户检测器更敏感。
If the regular perturbation method is used to solve the same problems, then, when the independent variable is big, so is the error of the solution.
如果用正则摄动法求解此类问题，则当自变量较大时，误差很大。
In practical process, the crown is designed by trial and accumulative experience, leading to low efficiency, high cost and big error.
在实际工程中，靠人为摸索和经验积累来估计凸度，不仅效率低、成本高，而且误差大。
The stimulation results show that the error between the observed value of non-adaptive state observer and the real one is big, and it can not be used to control the motor accurately.
仿真分析发现无参数校正状态观测器观测值与实际值偏差很大，不能用于对电机的精确控制。
As far as big diameter pipe gas transport is concerned, gas flow distribution will influence the flow measurement performance, and cause a large measuring error.
对于大管径气体传输来说，气体流场分布情况会影响流量测量的性能，并造成较大的测量误差。
The test results such as big error, bad stability and bad flexibility of domestic Y412 series raw cotton moisture tester that is designed by the resistance measuring moisture are analysed.
对以电阻法为设计原理的国产Y4 12系列原棉水分测试仪存在的测试结果误差大、稳定性差、通用性差等缺陷进行了分析。
The test results such as big error, bad stability and bad flexibility of domestic Y412 series raw cotton moisture tester that is designed by the resistance measuring moisture are analysed.
对以电阻法为设计原理的国产Y4 12系列原棉水分测试仪存在的测试结果误差大、稳定性差、通用性差等缺陷进行了分析。
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