实质上

A substance is through the primary transformation into an upper triangular matrix, the transformation matrix is a unit lower triangular matrix.

实质上是将A通过初等行变换变成一个上三角矩阵，其变换矩阵就是一个单位下三角矩阵。

Improve ecological garden from the psychological and mental state of deficiency in human services, the overall goal is to pursue coordination with the environment, essentially a man-made main ecological problems.

生态园林从改善人的心理机能和精神状态上服务于人类，总的目标就是追求人与环境的协调，实质上是一个以人为主体的生态问题。

It developed variations in nomenclature and in substance.

它在名称上和实质上都发生了一些变化。

Essentially nontoxic, it is used to flavor foods and in other commercial applications.

实质上是没有毒的，它可以增加食品的风味以及使用在其他商业用途上。

Legal duty conflict means the dilemma that the obligator can not make choice between his her legal identities .

法律义务冲突实质上是义务人具有法律意义上的身分之间存在无法取舍的困境。

Adjust the prime factor of market supply demand relations, apparently looking is commodity price, is the interaction of market supply and demand essentially.

调节市场供求关系的根本因素，表面上看是商品价格，而实质上是市场供求的相互作用。

Since the new period, the discussions on the nature of historiography in China's historic circle, ranging from Mr. He Zhaowu "dichotomy" to Professor Zhang Genghua's "quadripartition", actually have promoted the search model of historical layering thought, signifying the maturity of the ideas in China's historiography.

新时期以来，我国史学界在有关史学本质问题的探讨上，从何兆武先生的史学"二分法"到张耕华教授的史学"四分层"，这实质上形成了一种关于"史学本质"问题"分层思考"的研究模式，从而体现了新时期我国史学理论研究思想开始走向成熟。

A cross stroke added to a note that is less than a quarter note in value.

加在音符上的一个实质上还不到一个四分之一音符的十字型符号。

Music A cross stroke added to a note that is less than a quarter note in value.

符尾：加在音符上的一个实质上还不到一个四分之一音符的十字型符号

In fact, the control problems of the sonar array posture are track control problems. So On the basis of theoretic study, the author designs the robust output track control of the posture of the sonar base with regulable parameter and applies the study results of measurable disturbance decoupling and robust output track to the minehunting sonar array posture control, a robust control strategy with disturbance decoupling, output track and compensation for uncertainty is found.

猎雷声纳基阵的姿态控制问题实质上是跟踪控制问题，在进行理论研究的基础上，作者设计了具有可调参数声纳基阵姿态鲁棒输出跟踪控制系统，并基于反馈线性化方法将可测干扰解耦研究结果与鲁棒输出跟踪研究结果相结合，形成了同时具有干扰解耦、输出跟踪和不确定性补偿的猎雷声纳基阵鲁棒控制策略。

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。