可约的

We can use the ellipsoidal model to calculate the relations of period derivation and braking index with average density.

而我们就可利用椭球模型来计算周期变率和制动系数同平均密度的关系；如果取平均密度约为2.2×10〓克/厘米〓，则周期变率约为5.4×10〓秒/秒，制动系数为-0.4。

Firstly, it's proved that the base of free monoid is unique, and that the equation of a base, a generating set and a irreducible generating set in the semigroup with length; Secondly, it's given the relation of a primitive word and a word of indecomposable--Let and is indecomposable, then is primitive ;And by using the length's method and chart,some properties of primitive word have been proved and the solutions of the equation , are discussed; Lastly, on the base of some proposition in Free monoids and Languages ,the proofs of some properties are improved by instruction. For example: Let be a primitive word over X, where .Then is a code. And let then if and only if {} is a code.

首先，讨论了含幺半群中基的基本性质及基与最小生成元集的联系，并给出了含幺半群中基、生成元集、不可约生成元集三者之间的关系；证明了在有唯一长度的半群S中，不可约生成元集、基、最小生成元集三者之间的等价关系；其次，讨论了字的组合与分解性，得出了字的本原性与不可分解性之间的关系---若为不可分解的，则一定是本原的，反之，不一定真；并运用图示法证明了字的可补性理论，讨论了方程，的可解性；在此基础上，用归纳法进一步证明了本原字与码的有关命题--若是X上的一个本原字，其中，则是一个码；若则当且仅当{}是一个码。

When using this method to isolate thrombin-like enzyme from crude venom of Agkistrodon halys pallas, the total protein yield and total activity yield of thrombin-like enzyme were about 0.3% and 64% respectively, and specific activity was more than 2000 U/mg.

从江浙粗蛇毒中提取类凝血酶时，类凝血酶的总质量收率约为0.3%，总活性收率约为64%，比活可达2000 U/mg。三步柱色谱；类凝血酶；蛇毒；江浙蝮蛇；分离纯化

Experiments show that the micromechanical tunable resonator has a resonant frequency of 4.8 kHz and a Q-factor of 500, and the tunable-range of resonant frequency is about 6.8% at the tuning voltage of 0-25 V.

梳状式可调变频率微共振器的Q值可达500，共振器共振频率约为4.8kHz，调变电压在0-25V时，可调变率达6.8%。

We're planning to step on the gas: GEICO's marketing expenditures this year will top $100 million, up 50% from 1997. Our market share today is only 3%, a level of penetration that should increase dramatically in the next decade. The auto insurance industry is huge -- it does about $115 billion of volume annually -- and there are tens of millions of drivers who would save substantial money by switching to us. In the 1995 report, I described the enormous debt that you and I owe to Lorimer Davidson.

不过盖可 1998 年的承保获利很可能会下滑，但是保单数量应该还会继续成长，我们已准备好加紧油门，盖可保险今年预计的行销费用将突破一亿美元的大关，这数字比起 1997 年要增加 50%以上，截至目前为止，我们的市场占有率约为 3%，预计在未来的十年内还会大幅增加，整个汽车保险市场的大饼相当可观，每年约有 1，150 亿美元的市场胃纳量，预估将有上千万的驾驶人因为将保单转移到我们这边而节省相当可观的保费。

Because the TaAl alloy can't stand the high temperature (630℃) of thermal fusion bonding, this study carries out a low temperature (180℃) bonding method. The device fabricates successfully by using PDMS as the intermediate layer between two substrates.

在晶片制作过程中，因铝化钽合金无法承受热融合接合时的高温(约630℃)，然研究发现采用聚二甲基矽氧烷为中间层时，可成功於低温(约180℃)条件接合并制作出所需晶片。

There are about 150 species of genus Ligularia all over the world and more than 100 species spread in China.

菊科橐吾属植物全世界约150种，我国约有100多种，该属植物的根、茎、叶皆可入药，具有止咳、祛痰、平喘等功效。

The spacial-temporal characteristics of the climate response to volcanos connect with the latitude location, season and strongness of volcanic eruption, Series analyses also confirm the obvious correspondence between the volcanic eruption and the climate change.

时序叠加研究表明，强火山喷发可造成半球和全球年平均温度下降约0.3℃，持续时间约两年；火山活动对气候影响的时空分布特征和火山活动特征：如火山喷发强度、喷发位置和季节等等有关。

With the new gauge the optimal magnetic strength can be reduced to 900 Gausses and the voltage to 2.7 KV, so the cost can be reduced to 50 per ce...

新磁结构冷规性能测试表明：由于灵敏度的提高，在2×10~(-8)Pa时，冷规着火时间可缩短40%；所用磁钢中心值可从1600高斯降至900高斯，工作电压也可降低600伏，冷规成本因此约降低50%；此外，电压值的降低还使得漏电减小了一个数量级，从而拓宽了可测下限。

Sample Tray:Stainless steel sample holder with special design, can option the space between layers, can enactment the number of layers, the diameter of material-dry tray is 200mm,four layers; install the material about 1500ml(material thickness 10mm).

样品盘：特殊设计的不锈钢样品架，样品盘间距可调，层数自由设定；物料干燥盘直径为200mm，标配四层，也可定做六层；可放置物料约1500ml（料厚10mm）。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。