中板

Prestressed concrete slab-column structure has been widely used in long-span and multistory building.

中文摘要：预应力混凝土板柱结构在大开间的多层及高层建筑中得到了广泛的应用，其设计方法有直接设计法、等代框架法、塑性分析法和有限元法等多种方法。

By measuring the velocities of the P-wave and S-wave in three orthotropic directions including parallel and vertical directions to the stratum of the rock samples for slate, phyllite, mylonite and metasandstone, and based on the wave velocities of other rocks from the relevant studies, the anisotropic effect of wave velocity ratio of the P-wave and S-wave for most rocks is put forward.

通过对板岩、千枚岩、糜棱岩和变质砂岩等4种各向异性岩石在平行和垂直层理或板理的3个正交方向上进行大量的纵、横波波速试验，并结合对相关文献中己有岩石波速数据的深入分析，提出岩石介质纵、横波波速比的各向异性效应。这种效应广泛存在，其发育程度受到岩石类别的控制。

Furthermore, the center console, doors and lower dashboard are trimmed in black Fine Nappa leather.

此外，中控台，车门和较低的仪表板装饰黑色精细纳帕皮革。

The center console, doors and lower dashboard are trimmed in black Nappa leather, while newly designed 20in cast aluminum wheels complete the list of upgrades.

中控台，车门和较低的仪表板装饰黑色纳帕皮革，而新设计的20英寸铸铝车轮完整的清单升级。

Inside, the seats are upholstered in beige Valcona leather, while silk Nappa leather is used for the center console, doors and dashboard.

内部，座椅软垫米色Valcona皮革，而丝绸纳帕皮革用于中控台，车门和仪表板。

Other differences include an AMG spoiler lip on the boot lid, a roller blind for rear window, Nappa leather appointments for the seats, the top section of the dashboard, the beltlines, the door armrests as well as the centre console and door centre panels.

其他分歧包括AMG的扰流唇对尾部的箱盖，一个卷帘的后窗，纳帕皮革任命的席位，顶部的仪表板， beltlines ，车门扶手，以及中控台面板和车门中心。

The preliminary chromatogram data were resolved with Mallat algorithm of wavelet analysis theory. This method that resetting the high frequency signals, reconstructing low frequency and then correcting the background signals in the original signal was to avoid the data skewness with negative digital points after background correction and achieve the baseline correction; according to the study and analysis of simulated data including curve background and real data of the needle-plate and free metal partials insulation defects, the method is effective; the best wavelet function of the background correction is Db5 and the best resolution times of the background correction is 8 for chromatogram data of SF_6 decomposition products, based on the calculation with different wavelet functions and resolution times.

在初步获取的气相色谱数据基础上，运用小波分析技术中的Mallat算法对色谱数据进行小波分解，采取将高频信号置零，重构低频背景信号，再用原始信号扣除背景信号的方法，并对背景信号进行纵向平移以避免扣除后出现负数据点造成色谱峰失真的题目及达到色谱图基线校正的目的；通过对含曲线背景信号的模拟色谱数据和针-板、自由金属微粒缺陷下的真实数据的计算研究表明，该方法的应用是有效的；并通过对不用小波函数和不同分解次数的背景扣除计算，确定了SF_6气体放电分解组分色谱背景扣除所选用的最佳小波函数为Db5小波和最佳分解次数为8次。

In the study, we have found that when the long axis of an elliptical transducer is 2.5 times of the distance between nodal line and the plate center under free boundary condition, the depth of the first dip in mid frequency range of SPL spectrum can be greatly reduced.

从这些关系中可以得到激振器长轴是在自由边界条件下，节线到振动板中心距离的2.5倍时，中音谷会得到比较平缓的结果。

In this design of graduate,I choice the plank for connect nog cold pressing mould produce,pressing the mould is mostly made material breakaway or figuration get hold of piece method of machining.

在本次毕业设计中我选择的是支架连接板的设计，冲压模具主要是将板料分离或成形而得到制件的加工方法。

In this design of graduateI choice the plank for connect nog cold pressing mould produce,pressing the mould is mostly made material breakaway or figuration get hold of piece method of machining.

在本次毕业设计中我选择的是支架连接板的设计，冲压模具主要是将板料分离或成形而得到制件的加工方法。

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。