You've seen various ways to access services from both SCA and non-SCA Java components -- and the various error handling mechanismsm asynchronous programming model and various asynchronous calls.
您了解了从 SCA 和非 SCA 组件访问服务的各种方式，还了解了各种错误处理机制、异步编程模型和各种异步调用。
The disadvantages were that this method was based on assumptions on the model: point estimation based on parametric assumption and some properties of error components.
但是这种方法也有不足之处，就在于它对模型有一些弱的假定点估计依赖于误差因子与模型参数的假定，密度估计依赖于误差因子特征函数的假定。
Sensor's error caused by temperature and humidity could be compensated by choosing temperature and humidity as input components of the PCA model.
把温湿度信息作为PCA输入分量，能较好补偿温湿度造成的传感器误差。
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