恒等算子

Indeed,if X is〓or homogeneous group,then replacing fractional integral operator in thedefini-tion of〓by equal operator implies some of results inand.

实际上，当X是〓或齐次群时，用恒等算子代替〓中的分数次积分算子可得到和中的一个结论。

From the proof of the m-ain theorem it follows that we replace fractional integral〓in the definition of〓by equal operator I and obtain the boundedness of〓on〓(1＜p＜∞),so we generalize some of results in.

从主要结果的证明可知〓的定义中可用恒等算子取代〓而得到〓从〓到〓有界〓，从而推广了中的结论。

Three operators, the transpositional, identical and forward differential, are introduced firstly. Then the Bezier curve in conventional Bernstein-Bezier form is transformed to its operator form. Several properties of the curve are discussed in its operator form.

首先引入三个基本算子：移位算子、恒等算子和向前差分算子，然后将Bernstein-Bezier形式的Bezier曲线表示为更为简洁和直观的算子表示形式，并进一步讨论算子表示下Bezier曲线的各种性质，给出相关证明过程。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。