可循环的

So not only can the clearance food remnant, the tooth noodles germ spot and dental calculus filth, prevent°from the formation and deposition of tooth stone calculus, and can also rise to massage a gum, promote blood circulation, strengthen a tooth to organize for week of the function of anti-disease ability.

这样不仅可清除食物残渣、牙面菌斑、牙垢污物，防止牙结石的形成和沉积，而且还能起到按摩牙龈，促进血液循环，增强牙周组织的抗病能力的作用。

According to the properties of acrylic acid series polymer of scale inhibition. A kind of amphiprotic tercopolymer of acrylic acid, acrylamide and dimethyldiallylammonium chloride is synthesised, with water as solvent, persulfate and hypophosphate as initiator. Through the tests, the copolymer can show the good scale inhibiting effect and bactericidal action, and become a multifunctional scale inhibition.

本研究根据丙烯酸聚合物阻垢剂的特点，使用过硫酸铵(NH_4_2S_2O_8、次亚磷酸钠(Na_2PO_3)构成的氧化——还原型引发剂，水为溶剂，合成了新型可用于处理工业循环冷却水的丙烯酸—丙烯酰胺—二甲基二烯丙基氯化铵两性型三元共聚物。

In the second method only needs to adjust enters the fluid bed heat interchanger and returns directly remelts the solid material quantity proportionthen to be possible to control the bed to be warm, is relatively quite nimble, especially qualify in large capacity circulation fluid bed boiler.

第二种方法则仅需要调节进入流化床换热器和直接返回炉内的固体物料量的比例便可控制床温，相对比较灵活，特别适合于大容量的循环流化床锅炉。

In recent years,the foreign trade、the investment and the consumption is somewhat out of trim,which has weakened the resident consumption's function to the national economy and also affected the positive cycle and the sustainable development of the national economy.

从近几年的情况来看，外贸、投资与消费失去平衡，削弱了居民消费对经济的导向和拉动作用，影响了国民经济的良性循环和可持续发展。

2 A kind of enzyme and mediator modified electrode is devised by immobilyzing both N-methyl phenazine sulfate and glucose oxidase on the surface of carbon glassy electrode (GOD-NMP-GC electrode), which successfully realizes the electron transfer process between glucose oxidase and carbon glassy electrode.

将NMP-GC电极与葡萄糖氧化酶结合，制作了GOD-NMP-GC电极，该电极可快速实现电极=NMP介体=GOD活性中心=葡萄糖之间的电子长程转移，并且用循环伏安法对酶催化反应进行了研究；用含丰富乳酸脱氢酶的乳酸杆菌与NMP-GC电极相结合，制作了介体微生物电极，并检测到GC电极=NMP=LDH活性中心=乳酸之间的非均相电子转移。

The limiting cycle times represented in the model become independent of each other.Thus,the process can be transferred into a renewal process and a stochastic optimization formulation is developed based on renewal process theory.

该方法使模型的限定循环时间变为相互独立的，从而可将原过程转化为更新过程，并根据更新过程原理建立了优化该过程的期望值模型。

It can be used properly by adding a new designed regenerator in an existing simple cycle gas turbine to make this gas turbine system reach an optimal per formance.

它适用于在现有的简单循环燃气轮机基础上加装一新设计的回热器，可使该系统的性能达到最优。

In this paper,we propose a modified SC-SSF(spectral correlation-signal subspace fitting)method to estimate DOA of coherent narrow band or wide-band signals,while the advantage of SC-SSF method still rematins.

提要 本文提出一种修正的SC-SSF方法。该方法适用于宽带和窄带源，不仅可解决循环相关源的问题，而且具有更好的噪声抑制特性。

Under the conditions of fast heating, fast cooling and thermal cycling with larger temperature difference, it is concluded that(1)under appropriate strength and toughness, in creasing the vermiculating rate can enhance the thermal fatigue resistance of vermicular graphite iron;(2)increasing the vermiculating rate by a big margin can also enhance...

在快速加热、快速冷却以及较大热循环温差的服役条件下得出：(1)当强韧性相当时，提高蠕化率可提高蠕铁的热疲劳抗力；(2)大幅度提高蠕化率，尽管强韧性有所下降，但亦可提高蠕铁的热疲劳抗力。

Based on hydrogeological data and groundwater chemical analysis data and the theory and methodologies of groundwater chemical dynamics in combination with limited pumping test data, some groundwater chemical index such as activity of component、mineral saturation index are calculated and some hydrogeological parameters such as hydraulic conductively,transmissibility,artual speed of groundwater、specific velocity and groundwater age are also calculated zonally.The above calculation results are beneficial to quantificationally recognize the local hydrogeological conditions and to attest that the confined aquifer of Taconic formation has good permeability and transmissibility and t good renewal ability because of the active groundwater movement.

依据已有水文地质和水质分析资料，运用地下水化学动力学理论和方法，通过水化学指标（组分活度α、矿物饱和指数β）的计算分析，结合有限的抽水试验资料，分区计算出渗透系数K、导水系数T、地下水实际流速U、渗透速度V和地下水年龄t等5项水文地质参数，定量的认识水文地质条件，认证了水源地泰康组承压含水层具有渗透性强、导水性强、地下水循环交替快、可更新能力强等特点。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。