查询词典 presenced

The max value of the spatial heterogeneity grade were decrease according to the increase of decay degree of stump in the gap with stump.(4) The result showed by studing the season change of soil respiration in a conifer-broadleave forest after select cutting in Xiaoxingan Amount,soil respiration presenced the well season change after select cutting.The soil surface CO_2 flux has good correlated with soil temperature and soil moisture.

4对小兴安岭地区典型针阔混交林择伐后土壤呼吸速率季节变化研究结果表明，择伐作业后，土壤呼吸速率呈现规律性的(来源：AdaB6565C论文网www.abclunwen.com)季节变化，林地表面土壤呼吸速率与土壤温度和湿度有着较好的相关性，土壤温度和湿度共同解释了林地表面土壤呼吸速率的68.10%～98.9%。

For the multisensor linear discrete time-varying stochastic control systems with the different local dynamic models, using the Kalman filtering method, under the optimal fusion criterion weighted by scalars, the unified and universal optimal information fusion white noise deconvolution estimators are presenced, and for the corresponding time-invariant systems, the steady-state optimal information fusion white noise deconvolution estimators are also presented.

黑龙江大学自动化系，哈尔滨150080中文摘要：对于带不同局部动态模型的多传感器线性离散时变随机控制系统，应用Kalman滤波方法，在按标量加权最优融合准则下，提出了统一和通用的最优信息融合白噪声反卷积估值器，并对定常系统提出了稳态最优信息融合白噪声反卷积估值器。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。