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We prove that every linear map preserving zero Jordan triple product and unit from nest subalgebras of factor yon Neumann algebras to Banach algebra with unit is a Jordan isomorphisms.

接着我们对至少有一个非平凡可比较元的CSL代数上的双向保零积线性映射进行了研究，得到此映射为同构。

With the emerging signs of economic recovery in the region, APEC Economic Leaders, in their meeting in Bandar Seri Begawan in November 2000, mapped out ways of preserving, strengthening and further opening markets as well as sustaining economic recovery in APEC.

随着本地区出现了经济复苏的迹象，APEC经济领导人在2000年11月斯里巴加湾会议上制订了办法，来维护、加强、促进市场的开放，实现亚太经济的复苏。

With the emerging signs of economic recovery in the region, APEC Economic Leaders, in their meeting in Bandar Seri Begawan in November 2000, mapped out ways of preserving, strengthening further opening markets as well as sustaining economic recovery in APEC.

随着本地区出现 wWw.8tTt8.coM 了经济复苏的迹象，APEC经济领导人在2000年11月斯里巴加湾会议上制订了办法，来维护、加强、促进市场的开放，实现亚太经济的复苏。

If shape handles are given, the individual arc is proved to be monotone in barycentric coordinates system, and it can be convex-preserving through adjusting four handles.

若给定满足条件的形状参数，可以证明其在重心坐标系统中是保单调的，同时还可以调整这些形状参数使它保凸。

Results showed a high-purity and a good-integrity DNA can be obtained from the preserved fresh leaves of Camellia azalea, using the methods of modified CTAB and SDS subarea. The DNA extracting quality from the leaves preserved with silica gel by the methods of modified CTAB and SDS subarea is high, which is the same as from the leaves preserved at the -200C and liquid nitrogen, So these preserving methods are suitable for the fresh leaves of Camellia azalea, including for it from distant place.

结果表明，改进的CTAB和SDS区室法都适合杜鹃红山茶基因组DNA的提取，都能提取到完整性较好、纯度较高的基因组DNA，且在采用的-200C、液氮、硅胶脱水干燥3种方法保存样品中，硅胶脱水干燥法保存的样品与其它几种方法保存的样品一样，提取获得了高质量DNA，为远距离采样提取杜鹃红山茶DNA提供了一种较好的鲜叶保存方法。

These curves contain a shape parameter which can adjust the softness of curve and have the same continuity with the original B-spline. In succession, using the positive conditions of Bernstein polynomial to find a range in which the shape parameter takes its value so as to make the corresponding interpolating curves monotonicity-preserving and C~2 continuous.

利用奇异混合的思想构造出一类带有形状参数的多项式样条曲线，即均匀α-B样条曲线，在无需反求方程组、迭代过程和最值求解的情况下就能轻松做到插值给定的点列；它含有形状参数α，这就增加了曲线的柔性，同时又和原B样条曲线具有相同的参数连续性。

The basic idea is as follows: first, a kind of plane α-B-spline interpolation curve with a shape control parameter a is constructed; then, by converting the first derivatives of the curve into Bernstein polynomial, the positive conditions of Bernstein polynomial can be used to get the necessary and sufficie nt conditions for the monotonicity of α-B-spline interpolation curves, i.e., the range of the parameter a. Therefore, monotone-preserving interpolating curves can be obtained succinctly.

其基本思想是：首先构造带有形状可调参数的一类平面(-B样条插值曲线，再把其一阶导矢的两个分量分别转化为Bernstein多项式，从而利用Bernstein多项式的正性条件，得到此曲线为单调的充要条件，即形状参数的取值范围，简单、快捷地实现此参数样条曲线的保单调插值。

This technology can automatically detect the correctness of velocity field, which greatly improves the computation accuracy of focusing operator and the accuracy of bifocal amplitude-preserving imaging.

该技术可以自动检测宏观速度场正确与否，大大提高了聚焦算子的计算精度和双聚型保幅成像精度。

It dedicated to understanding and preserving biological diversity and cultural heritage.

它的宗旨是了解和保存生物多样性和文化遗产。

The American National Aeronautics and Space Administration has given birth to a new process for preserving paper.

美国国家航空和航天管理局发明了一种保存纸张的新方法。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。