后孔

Diesel engine oil pump gear shaft and bushing wear and tear take the initiative to repair oil pump gear as a result of its own weight and when the passive gear meshing radial thrust, shaft and bushing easily h**e side-hole grinding, increased gap.

柴油机齿轮式机油泵主动轴与衬套磨损后的修复由于机油泵主动齿轮本身重量及被动齿轮啮合时产生的径向推力，容易使轴和衬套孔产生偏磨，间隙增大。

Crack reasons for this are: the heating temperature is too high as a result of quenching or cooling in a hurry, the quality of thermal stress and metal volume changes in the organization of the anti-stress than the breaking strength of steel; the work of the original surface defects (such as surface micro-cracks or scratches) or the internal defect of steel (such as slag, serious non-metallic inclusions, white point, the residual cavity, etc.) formed in the quenching stress concentration; serious Decarburization and carbide surface segregation; parts after quenching Back lack of timely or tempering fire; processes in front of the stress caused by excessive cold red, forging folding, turning deep marks, sharp edges and corners, such as the oil groove.

造成这种裂纹的原因有：由于淬火加热温度过高或冷却太急，热应力和金属质量体积变化时的组织应力大于钢材的抗断裂强度；工作表面的原有缺陷或是钢材内部缺陷（如夹渣、严重的非金属夹杂物、白点、缩孔残余等）在淬火时形成应力集中；严重的表面脱碳和碳化物偏析；零件淬火后回火不足或未及时回火；前面工序造成的冷冲应力过大、锻造折叠、深的车削刀痕、油沟尖锐棱角等。

Using positioning screw holes and bearing clearance interlinked, first soaked in kerosene inside bearing 1 h ~ 2 h, with a special nozzle and the inhalation of kerosene oil gun repeatedly into bearing 2 or 3 times, pour dry oil lubricating the gun will be required to Fat can be added to.

利用定位螺丝孔与轴承间隙相通，先将轴承浸泡在煤油里1 h～2 h，用特制油嘴及油枪吸入煤油，反复打进轴承2～3次，淋干后用油枪将所需润滑脂加进去即可。

Easy hanging, no suspension screw on the top, bottom, side or back of the speaker. Easy to hang up loudspeakers with suspension riggings.

吊挂方便，音箱的顶部，底部，侧面和后面都没有吊装螺孔，配置吊挂配件后可以很方便的吊挂音箱。

A vent to permit the escape of air or other gas .backfire from a recoilless weapon.

从无后座力武器开口或有孔炮尾后喷的火药气体。

To decorate with a perforated pattern.backfire from a recoilless weapon.

从无后座力武器开口或有孔炮尾后喷的火药气体。

A similar implement or weapon .backfire from a recoilless weapon .

从无后座力武器开口或有孔炮尾后喷的火药气体。

For vibration mode-shape, this affect is moreseverity on high rank stage vibration than low. With opened hollow and pier added on dam,the frequency of vibration decline.

对于振型而言，这种影响对低阶振型比高阶振型大，考虑孔口和闸墩后，大坝的自振频率有所降低；在低阶振型中有一部分的排列顺序发生了变化，但这些变化不致使大坝的动力特性发生显著的改变。

Porous sorbent with high adsorption capacity was able to be produced by pyrolyzing at 400—600℃ in N_2 for 2.8h and activated with CO_2 at 870℃ for about 3.0h.

即炭化温度在400-600℃之间，炭化时间为2.8h左右，温升速率较低的条件下无氧炭化后所得的样品，再经过870℃环境下在CO2中活化3.0h，可得内孔发达、对SO2吸附能力很强的吸附剂。

In addition, the ingredients have been tested by the IR spectra which show the probability of the nano-porous structure. SEM pictures, specific surface areas and distribution of pore diameter have been tested to study the nano-porous structures in surface and some data before and after the pyrolyzing process have been gained: the size of the organic aerogel is 30~50nm, that of the carbon aerogel is about 10nm, the specific surface area increases from 341.77m^2/g to 452.75m^2/g, the density increases from 0.1708g/cm^3 to 0.3356g/cm^3 respectively.

借助有机气凝胶的红外光谱研究了其化学结构，说明其网孔结构形成的可能性；研究了有机气凝胶的扫描电镜图像、比表面积及孔径分布等，并得到碳化前后的一些对比数据：有机气凝胶颗粒大小30~50nm，碳化后约为10nm，比表面积从341.77平方公尺/g增大到452.75平方公尺/g，密度从0.1708g/立方公分增大到0.3356g/立方公分。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。