不可实现的

Controlled synthesis of carbon nanotubes and assembling them into macroscopic structures are of great importance to the applications of carbon nanotubes, and a deep understanding of the growth mechanism of carbon nanotubes would be an indispensable prerequisite for well-defined synthesis in a controllable way.

碳纳米管的可控制生长，及其宏观尺度结构的制备，对于碳纳米管的应用具有重要的意义，为了实现准确的生长控制，对碳纳米管生长机理的深入了解是不可缺少的前提条件。

In other words, when a branch in the code the computer was processing occurred (that is, there is an unanticipated call to another section of the program that necessitates another call to memory), instead of stalling the pipeline to retrieve the instructions that were branched to, the computer added a delaying instruction behind the branch that either did something useful while the other instructions were called, or at worst did nothing at all.

换句话说就是，当计算机执行的代码中出现了分支(就是说，发生了不可预料的对程序中其他程序段的调用，即必须实现一个新的访问存储器的操作)时，计算机不是停止这条流水线的工作去修复被分解的指令，而是在这个分支指令后增加一个延迟指令，该指令在其他指令被调用时，要么做一些有用的事情要么执行空操作。

Moreover regardless of adopts what kind of existence the existent solution, digit imaging system's latitude must be a certain that cannot be intervened artificially value on the physical level after leaving factory. Some digital cameras are known as alterable latitude, but they change camera's latitude by past treatment through DSP. So users cannot change latitude, light-shade transition or color transition as film camera just by replacing film's type. Now the civil camera's minimum ISO is 50. This value is discommodity for users to photo by the long exposure or other similar mode.

另外无论采取何种目前存在的解决方案，由于目前具有动态范围可调功能的数字照相机都是针对CCD所采集的数据进行再处理，因此，数字成像系统物理层上的宽容度动态范围始终是一个人工不可干预的固定值，这样的话，用户无法像胶片一样仅仅改变胶片型号便能实现宽容度和色彩过渡的改变以方便画面的创意，而且目前民用照相机感光度的最低值一般为ISO50，这个值在进行类似长曝光等方式的创意摄影时仍存在较大的不便之处。

Analysis includes three aspects: main body of environment's right is from main body using environment discreditably to main body using environment hurtfully; Character of environment's right is from creditor's right based on social damage to property's right based on implementing environment's criterion; Form of environment's right is from static adscription to dynamic fluxion.

分析了中国环境使用权的有偿分配主体由有损害使用主体转变为有害使用主体、性质由建立在因污染引起的"社会损害"基础上的债权转化为实现环境质量标准基础上的物权、形态由不可转让的静态归属到可交易的动态流动的进化过程。

In order to protect the integrality of the message, the method of digital signature is adopted.

本论文方案中设计实现的基于JPEG图片的伪装和加密的秘密信息交换方法，具有很好的伪装和防止篡改的能力，嵌入的算法具有较强的不可感知性和鲁棒性。

In the research subject of receiver-based Multicast Non-Repudiation,there existed few results and the only result,due to the authors' knowledge,is Nark,whose implementation must be based on smart card.And the security of its method of generating pseudo-random sequence has not been strictly analyzed and proved.

目前，针对组播接收方不可抵赖问题的研究成果非常少，作者所知的唯一一个研究成果Nark是基于智能卡实现的，且其伪随机序列的产生方法的安全性并没有经过严格的分析和证明。

In the last few years----in one-millionth the lifetime of our species on this planet----we have achieved an extraordinary technological capability which enables us to seek out unimaginably distant civilizations even if they are no more advanced than we.

在最近几年--我们人类在这个行星上的寿命的百万分之一的时间---我们实现了一种特别的技术能力，即使对远不如我们先进的不可想象的遥远的文明社会，也能搜寻到。

Unlike the revolutionary, the reformist acknowledges that genuine progress is contingent, piecemeal, and imperfect. The recalcitrance of reality—including the messy reality of human nature—guarantees that."One is prosaic," Aron noted,"the other poetic." Equally, one is real, the other fantastical.

与革命论者不同，改良主义者认识到社会具有很强的抗拒变迁的倾向这一现实，认识到真实的人性不是整齐划一的，因此认为真实的社会进步都是以不可预知的，零敲碎打的方式来实现的，因而不可能是完美无缺的。

In the aspect of experiment research: for engineering ceramics such as ZrO2^Si3N4experiments are carried out by a diamond face mill cutter. Cutting force and machined surface roughness are measured, they indicate:(1) Based on the experiments of scratching and ultra-precision face-milling, it is considered that micro-milling depth is the most important influence factor to realize brittle/plastic transition.

实验研究方面：以ZrO_2、Si_3N_4等工程陶瓷为研究对象，在加工中心上进行了切削力及表面形貌实测，实验结果表明：(1)由划痕实验和金刚石端铣刀超精密铣削实验，认为切削深度的微量化将是实现工程陶瓷材料脆塑性转换的重要条件，同时材料本身的特性也是不可忽视的因素。

When the program is recompiled, the new name is picked up wherever the symbol occurs in the code.

尽管通过编辑器的查找替换功能也能实现整个变量名称的替换，但也很有可能出现多换或者少换的情况，而在计算机程序中，任何小错误的出现都是不可饶恕的。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。