即

A hammer drill, in particular a chipper comprising: a body 2 having at least one support handle 4; an electric motor mounted within the body 2 ;an electric switch 22, capable of being switched on and off by a trigger button 8 connected to it, to activate or deactivate respectively the electric motor, wherein the trigger button 8 is moveable between two positions, a first position where the electric switch 22 is off and a second position where the electric switch 22 is on; a locking arm 38 moveably mounted on the electric switch 22 which, when the trigger button 8 is located in its second position, is moveable between two positions, a first position where it is disengaged from the trigger button 8 and a second position where it engages with the trigger button 8 and holds the trigger button 8 in its second position.

锤钻特别是錾，包括：本体(2)，该本体(2)具有至少一个支撑手柄(4)；安装在本体(2)内的电动马达；电开关(22)，该电开关(22)能够由连接到电开关(22)上的触发按钮(8)接通和断开，从而分别使电动马达启动或停用，其中该触发按钮(8)能够在两个位置即第一位置和第二位置之间移动，在该第一位置处电开关(22)断开，在该第二位置处电开关(22)接通；可移动地安装在电开关(22)上的锁紧臂(38)，当触发按钮(8)位于它的第二位置中时，该锁紧臂(38)能够在两个位置即第一位置和第二位置之间移动，在该第一位置处锁紧臂(38)与触发按钮(8)脱离，在该第二位置处锁紧臂(38)与触发按钮(8)接合并将触发按钮(8)保持在触发按钮(8)的第二位置中。

Results High homogenous hMSCs were obtained and after co-culture for 5 d with osteoblasts, they fused to form multinuclear cell clusters in micrograph and were postive in TRAP staining. Conclusion The co-culture system method is successful.

结果：体外分离、培养的hMSCs具有独特的细胞免疫学表型，即CD73和CD105阳性， CD34和CD45 阴性。hMSCs与成骨细胞共同培养5 d后，即可见单个核细胞融合成多核细胞，TRAP 染色可见多数细胞胞浆呈酒红色，为诱导成功的破骨细胞。

RESULTS In contrast with the control, more cells of the experimental group entered S phase during the early differentiation (24 h, 48 h), whereas a smaller number of cells entered during the late differentiation (72 h) when multinucleated myotubes began to form.

结果 发现肌细胞分化早期即24， 48 h时，与对照组比有更多的细胞进入S期；分化后期即72 h多核肌管形成时，S期比对照组明显减少，而G0/G1期明显高出对照。

Four factors together caused this:(1) the insistence of the anti Gnostic fathers, particularly Tertullian, that the faithful are those who believe "the faith" as stated in the "rule of faith", ie, the Creed;(2) the intellectualism of Clement and Origen, to whom pistis was just an inferior substitute for, and stepping stone to, gnosis of spiritual things;(3) the assimilation of biblical morality to Stoic moralism, an ethic not of grateful dependence but of resolute selfreliance;(4) the clothing of the biblical doctrine of communion with God in Neoplatonic dress, which made it appear as a mystical ascent to the supersensible achieved by aspiring love, having no link with the ordinary exercise of faith at all.

有4个因素共同造成了这一：（ 1 ）坚持战斗在反腐败的诺斯替父亲，尤其是戴尔都良，即忠诚，是那些相信&诚信为本&的声明，在&法治诚信&，即，信仰；（ 2 ）知识分子的克莱门特和渊源，向谁信实的只是一个劣质的替代品，并踏脚石，预后的精神的东西，（ 3 ）同化的圣经道德斯多葛道德主义，伦理不是感激的依赖，但坚决自立；服装的圣经教义与上帝在neoplatonic著装，这使得它似乎是一个神秘上升到supersensible实现抱负的爱，没有结合一般意义上的演练的信念都没有。

Four factors together caused this:(1) the insistence of the anti Gnostic fathers, particularly Tertullian, that the faithful are those who believe "the faith" as stated in the "rule of faith", ie, the Creed;(2) the intellectualism of Clement and Origen, to whom pistis was just an inferior substitute for, and stepping stone to, gnosis of spiritual things;(3) the assimilation of biblical morality to Stoic moralism, an ethic not of grateful dependence but of resolute selfreliance;(4) the clothing of the biblical doctrine of communion with God in Neoplatonic dress, which made it appear as a mystical ascent to the supersensible achieved by aspiring love, having no link with the ordinary exercise of faith at all.

有4个因素共同造成了这一：（ 1 ）坚持战斗在反腐败的诺斯替父亲，尤其是戴尔都良，即忠诚，是那些相信&诚信为本&的声明，在&法治诚信&，即，信仰；（ 2 ）知识分子的克莱门特和渊源，向谁信实的只是一个劣质的替代品，并踏脚石，预后的精神的东西，（ 3 ）同化的圣经道德斯多葛道德主义，伦理不是感激的依赖，但坚决自立；服装的圣经教义与上帝在neoplatonic着装，这使得它似乎是一个神秘上升到supersensible实现抱负的爱，没有结合一般意义上的演练的信念都没有。

Though I have said that Patriarchal Power was not at first distinguished according to the objects over which it was exercised, I feel sure that Power over Children was the root of the old conception of Power; and I cannot doubt that the earliest use of the Nexum, and the one primarily regarded by those who resorted to it, was to give proper solemnity to the alienation of property.

虽然我们已说过，&父权&在最初时并不是因它所行使的对象的不同而有所区分，然我确切地感到，&对子女的权力&实即是古代&权力&概念的基础；我也深信在最早应用&耐克逊&时，也即是在原来应用它的人们的心目中，&耐克逊&的作用是在使财产的移转有适当的庄严仪式。

But the effluent ammonium in the anoxic reactor, where enough NO2 were present, was equal to the blank system, and no ammonium was converted to such nitrogen compounds as NO2- and N2 by Nitrosomonas eutropha using NO2 as electron acceptor, which maybe caused by lack of the function bacteria. There were two ANAMMOX reaction pathways in the one-stage autotrophic nitrogen removal system. One way was that after part of NH4+ was oxidized to NH2OH under aerobic conditions, NH2OH and NO2- were converted to N2O under anaerobic conditions, at last N2O was further converted to N2 which realized the nitrogen removal; Another way was that at first NO2- was reduced to NH2OH, NH2OH reacted with NH4+ to form N2H4, which was further converted to N2 subsequently, realizing the nitrogen removal.

结果表明：单级自养脱氮系统内6.72%的氨氮是通过吹脱等物化作用去除的，不超过6.02%的氨氮是通过传统硝化反硝化途径去除的，87.26%左右的氨氮是由自养脱氮途径去除的，自养脱氮反应起主要脱氮作用；在足够NO2存在且缺氧的条件下，单级自养脱氮系统内的出水氨氮浓度与空白反应器相当，NH4+并没有被亚硝化单胞菌以NO2为电子受体氧化为NO2-和N2等化合物而得以去除，可能是因为系统内不存在该代谢功能的亚硝化功能菌；单级自养脱氮系统内存在两条ANAMMOX反应途径：其中一条途径即NH4+在好氧条件下被氧化为NH2OH后，生成的NH2OH与系统内的NO2-在缺氧条件下被转化为N2O，N2O则进一步被转化为N2而实现氮的去除；另外一条途径即NO2-首先被还原为NH2OH，生成的NH2OH则与系统内的NH4+反应生成N2H4，N2H4继续被转化为N2而实现氮的去除。

Based on above studies, some main conclusions were obtained as follows : 1 the diatoms forming mats in low latitude west pacific is"shade flora"diatom Ethmodiscus rex Hendey; 2 the sites found diatom mats are zone distributed, the direction is NW-SE and most distribute in the deep water area with flat seafloor, between 17°N～20°N and the water depth 4837-6150 m below Carbonate Compensation Depth (CCD 3) AMS 14C dates show that the sediments rich in diatom mats occurred during 16.0 ~ 28.6 ka B.P., which means the bloom mainly occurred in last glacial maximum, while there are not diatom mats deposits in other layers; 4 A total of 101 diatom taxa belonging to 40 genera had been identified from the 155 samples in the two cores WPD 03 and WPD 12, and the relative percentage of Thalassionema frauenfeldii are the highest, Thalassionema nitzschioides、Azpeitia nodulifera、Hemidiscus cuneiformis、Nitzschia marina take the second place.

14C年期间，即&勃发&发生于末次冰期最盛期；4在WPD 03和WPD 12两个岩芯共155个样品中共鉴定硅藻40属101种，且Thalassionema frauenfeldii的相对百分含量最高，Thalassionema nitzschioides、Azpeitia nodulifera、Nitzschia marina、Hemidiscus cuneiformis等次之，这五种硅藻占整个硅藻物种相对百分含量的85%左右，说明在该海域表层水体硅藻席沉积过程中，这五种硅藻最容易与成席硅藻在同时期的环境中生存，形成勃发；5MIS3期的晚期，该区域表层海水盐度降低，这有助于该区水体的成层化，从而使&树荫种&硅藻开始勃发，导致&秋季倾泻&；6末次冰期由于南极中层水北扩，南大洋中层水将富含硅酸盐的海水带入了研究区，即南大洋的&硅溢漏&作用，使该区域硅藻得以勃发，同时，铁输入的增多，可能也是造成硅藻勃发的主要原因之一。

Some residues are subject to conservative substitution of one residue by another with similar properties, others to nonconservative substitution where one amino acid residue is replaced by another with different propertied.

某些塞住的嘴基属于保守的取代，即一个残基被别一个相似性质的残基取代；其它为非保守的取代，即一个氨基酸残基被另一个不同性质残基取代。

Based on the hypothesis of Brands, this thesis presents two off-line electronic cash system applied to small payment: one is an off-line nondivisible electronic cash system with complete anonymity, and the other is an off-line nondivisible electronic cashsystem with repealed anonymity. The two systems can solve the bottleneck problem of bank server. Furthermore, based on the concept of virtual debit as well as the payment demand of pay-per-use electronic commerce and mobile commerce, this paper designs a micro-system NPAY, which can solve the problem of extra-consuming, greatly reduce the system communication overhead, and the consumer can anonymously consume.

基于Brands假设，设计了两个适用于小额支付的离线电子现金系统：一个是具有完全匿名性的离线不可分电子现金系统，另一个是可撤消匿名性的离线不可分电子现金系统，这两个系统都较好地解决了银行服务器的瓶颈问题；针对即付即用(pay-per-use)类型电子商务和移动商务的支付需求，基于&虚借记&的概念，设计了一个微支付系统NPAY，较好地解决了消费者超额消费问题，系统的通讯开销也大大减少，并且消费者可以匿名消费。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。