性能良好的

In order to meet the needs of sports, it must withstand high strength trampling frequently. This requests the turf bed of sports field with strong surface firmness, good water permeability, high draining speed and compaction resistance ability, so as to provide the good playing quality, and meet the needs of turfgrass growth.

为了满足体育运动的需要，它必须经常承受高强度的践踏，这要求运动场草坪的坪床具有较强的表面强度、良好渗透排水性和抗板结性，以提供良好的运动性能，并保证草坪草的正常生长。

Furthermore, the paper analyses the randomness of two schemes and test them with FIPS 140-2 and SP 800-22 issued by National Institute of Standards and Technology.

论文详细分析了这两种方法产生的伪随机序列的随机性能，特别是使用美国国家标准和技术局发布的FIPS 140-2及SP 800-22测试标准(来源：A6dBC21论12文网www.abclunwen.com)对时空混沌伪随机比特发生器产生的比特序列进行了检测，结果表明这两种伪随机比特发生器随机性能良好。

The tribological properties of nanoparticles as oil additive were investigated with a four-ball tribometer.

在 四球试验机上考察了它们的摩擦学性能，发现季铰盐修饰(NH4)3PMo12O40纳米微粒在中低负荷下具有良好的抗磨性能和一定的减摩作用，可明显提高液体石蜡的承载力。

This rubber is isobutylene of pvp-k, complete saturated rubber, So has the extremely good physical and chemical properties, for example have good ozone-resisting aging resistance, oxygen ageing resistance, light ageing resistance, climate aging resistance, the chemical stability and excellent air tightness and water resistance, excellent elasticity and energy absorption performance.

该橡胶是异丁烯的均聚物，无双键，为完全饱和橡胶，所以具有极好物理和化学性能，如，良好的耐臭氧老化性、耐氧老化性、耐气候老化性、较好的化学稳定性、优异的气密性和耐水性，极好的弹性和能量吸收性能。

So to make sure the new naval vessel has a good performance, we need an evaluation tool to evaluate the performance of the naval vessel in different design stage.

因此为了保证交付的舰船具有良好的使用性能，需要在舰船设计的不同阶段应用有效的工具评估舰船的整体性能。

According to the results of the simulation and experiments, the nerve net self-adapting controller has the high quality of static-dynamic performance and restrain the infection to system performance under hard circumstances like large inertia variety load and the huge change of the torsion

通过大量的系统仿真试验和实际系统的调试，本文所设计的智能控制器可以使系统具有良好的动、静态性能，很好地满足工程中所要求的性能指标。

It is shown that the stainless steel without Nickel or Chromium has good mechanical properties and good resistance to corrosion and oxidation, and properties equivalent to 304 and 305 stainless steels.

结果表明：本文所设计的无镍铬不锈钢具有优异的力学性能，良好的高温抗氧化性和耐海水腐蚀性，且达到ZG304、ZG304不锈钢的性能指标。

At present, we offer high quality high proportion fishing fall, high proportion alloy ball, high proportion alloy round stick, high proportion alloy unit, high proportion alloy golf head, high proportion alloy off-centered dipole and other high proportion alloy abnormal units. Production capacity: above 200T/year.

按合金组成特性及用途分为W-Ni-Fe、W-Ni-Cu、W-Co、W-WC-Cu、W-Ag等主要系列，其密度高达16 。5-19.0g/cm3，而被世人称为高比重合金，它还具有一系列优异的特性，比重大：一般比重为16.5-18.75g/cm3，，强度高：抗拉强度为700-1000Mpa，吸收射线能力强：其能力比铅高30-40%，导热系数大：为模具钢的5倍；热膨胀系数小：只有铁或钢的1/2-1/3，良好的可导电性能；具有良好的可焊性和加工性。

The raw materials for spunlaced tissue, specification, performance requirements and application range are introduced in the passage.

介绍了一次性面巾的种类和特性，通过性能对比指出水刺法非织造布作为卫生面巾材料的优势，简述了水刺法面巾的原料、规格、性能要求以及应用范围，并认为该产品具有良好的发展前

To best achieve the working performance of the said concrete, with the help of theology theory in the research, we have analyzed the principle of free-vibration densifying and shaping of mixed concrete, that is, with the perquisite of fluidity, the concrete should have good property of filling-up-space, penetration through voids of fixed steel reinforcement, adherence and prevention from losing water and segregation, and the conflict between anti-segregation and deforming capability should be sorted out.

为得到自密实高性能混凝土的最佳工作性能，在研究中借助流变学理论，分析研究了混凝土拌合物免振捣成型和密实的机理，在大流动性的前提下，要求混凝土具有良好的填充性、钢筋间隙通过性和粘聚性，防止泌水、离析，解决变形能力与抗离析性能力的矛盾。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐