二轴的

Through the tests on gas driving water and water driving gas, the flow law of gas and water was real-time observed. Mainly based on the test of water driving gas as an example, the development of molding coal sample and NMR triaxial osmoscope was demonstrated. The experiment process of water driving gas and parameters were demonstrated. NMRI images of molding sample in horizontal cross-section along the driving direction were obtained by NMRI instrument. The results from images were analyzed and compared. Some novel laws were obtained as the following:(1) the leading edge of water driving has inconsistency. This certified the important previous conclusion that the storage of methane mainly was absorbed in inner surface of pore from NMRI technique;(2) the existence of dominant driving pathway was tested and the way kept almost fixed. The pathway is apt to exist in the edge of coal samples where pore and fracture fully develop;(3) the variation of water flow determines the transport velocity of leading edge of water driving and it has lag effect;(4) the effectiveness of the first driving is better than the second driving;and (5) the subsequence of water driving gas are from trunk fractures to branch fractures, then to branch pores.

主要以水驱气NMRI试验为例，详细介绍了核磁共振三轴渗透仪和型煤试件的研制，并重点阐述了水驱气试验过程和相关参数，利用NMRI技术实时观测得到了不同时间沿驱替方向型煤试件水平剖面的NMRI成像图，最后对试验结果进行了比较分析，揭示了一些新的规律认识：(1)水驱替前缘具有不一致性，从NMRI试验角度验证了前人甲烷类气体赋存形式主要以吸附在孔隙内表面为主的重要结论；(2)煤试件存在优势驱替路径，且这种优势路径在驱替过程中基本保持不变，水驱气的优势驱替路径易产生在煤试件边缘，即煤孔隙裂隙发育区；(3)水驱流量变化决定了水驱前缘的运移速度，且对水驱气效果具有滞后效应；(4)水驱气初次驱替效果好于二次驱替效果；(5)水驱替气的顺序为：主要大裂隙—周边裂隙—周边孔隙。

Through Hilbert transform, a signal's plane trace can be get. There are two frequencies in the tested signal, so the signal's plane trace may be looked as the track of the out pole's end when two poles rotate around parallel axles. Using the knowledge of motion synthesis in theory mechanics, a formula to describing the change of plane trace's step length and angle for two-frequency be get. So we may prolongate the tested signal's plane trace from the echo's initial arriving moment, and get a certain length of the signal's prolongation.

通过Hilbert变换可得到测试信号的平面迹线，测试信号中只含有两个频率成分，视为双频信号，双频信号的平面迹线相当于两连杆绕平行轴转动时外杆杆端迹线，利用理论力学中运动合成和瞬心知识，推导出双频信号平面迹线步长平方满足余弦线性复合函数，而迹线转角可视为线性变化，据此可对回波到来之前的测试信号平面迹线作延长，得到一定长度的信号延展段，信号延展段与实测段作差可得到一次、二次回波的第一个波峰值。

82 Times as high as the flow rate at the inlet; the velocity profile in the lower region is relatively uniform, and changes at the exit from a parabolic shape towards a plug flow as Re increases; The strong circulating flow in the upper region is very favourable to evaporization of heated fluid because it not only forces all the heated fluid to flow through the liquid surface and, therefore, to evaporate effectively, but also causes a large part of fluid to recirculate to the liquid surface and, therefore, to get a second opportunity of evaporization. In addition, the uniform velocity profile in the lower region is also favourable to crystallizing process.

轴向进料蒸发室进口管侧上方有强烈的循环流存在，循环流流量为进口流量的1.48～1.82倍；循环流下部流速分布较均匀，出口区流速在低Re时为抛物线分布，高Re时接近活塞流；强烈循环流的存在不仅迫使加热流体全部流经液面及其附近进行充分蒸发，而且之后还使相当部分流体再次循环回到液面及附近进行二次蒸发，对蒸发操作十分有利；蒸发室下部流速的均匀分布亦有利于蒸发结晶过程。

Based on the survey of community plots, a quantitative analysis of the communities at Luya Mountain is performed with TWINSPAN Two Way Indicator Species Analysis and DCA Detrended Correspondence Analysis methods. 82 quadrates collected from Luya Mountains were classified into 28 types by TWINSPAN, which belong to seven vegetation types. The result of DCA indicated that those 28 types were reliable. Diagonal line of the two-dimensional ordination diagram of DCA reflects the gradient changes of elevation, temperature and humidity. It is considered that the major factors that restrict the community distribution of the mountains are elevation、temperature and humidity.

本文在群落样方调查基础上，采用双向指示种分析法TWINSPAN和除趋势对应分析DCA对山西芦芽山植物群落进行数量分类和排序TWINSPAN等级分类将芦芽山82个样方分为28类，可归属于7个植被型，分类结果反映了植物群落类型与环境梯度之间的关系，并在 DCA二维排序图上得到较好的验证DCA排序轴对角线基本反映了海拔、温度和湿度的梯度变化，表明群落生境所在地的海拔、温度和湿度是决定群落分布的主要因素

During oil production, pumping rod is eccentric in the long oil tube, in which flow of the swabbed fluid can be regarded as an unsteady flow of second-order fl.

在采油过程中，由于油井较深的缘故，抽油杆在油管中是处于偏心位置的，可以把聚驱井抽汲液在井筒中的流动视为二阶流体在内管做轴向往复运动的偏心环空中的非定常流动。

Air /Pop Loc remote Lockout Rebound adjustable/100mm travelFront Derailleur:Shimano SLX FD-M660/34.9mmRear Derailleur:Shimano XT RD-M772 SGSShifters:Shimano SLX SL-M660 Rapid-fire plus/2 way releaseChain set:Shimano XT FC-M770 HOLLOWTECH 2Chain rings: 44/32/22 TeethBottom Bracket:Shimano Cartridge/68mm shellCassette:SRAM PG-980 11-32 Teeth/alloy spiderChain:Shimano CN-HG53Pedals:Shimano PD-M505Front Brake:Avid Elixir5Scott HOT Rod OS 31.8mm Flat /620mm/9 degrees bendStem:Scott Comp 4 Bolt/OS31.8mmGrips:Scott lock-on gripsRims:DT Swiss 445d 32Hole /blackFront Hub:Scott disc pro disc itrear hub:shimano fh-m525 sl disc itspokes:dt swiss champion black 1.8mmfront tyre:schwalbe rocket ron 26*2.1/50epi bead performance seriesseat post:scott comp/31.6mmweight:2.35 Lbs

空气/流行禄远程锁定反弹adjustable/100mm旅行前避震器：禧玛诺SLX FD-M660/34.9mm 后变速器：禧玛诺xT配对的RD - M772信贷保证计划转换器：禧玛诺SLX可溶性L - M660速射加/ 2的方式释放套链：禧玛诺xT配对的FC - M770 HOLLOWTECH 2 链环：44/32/22牙中轴：禧玛诺Cartridge/68mm壳盒式：SRAM的指引980 11-32齿/合金蜘蛛连锁：禧玛诺架CN - HG53 踏板：禧玛诺钯M505 前刹车：Avid公司Elixir5 斯科特热棒操作系统三十一点八毫米平/六百二十零毫米/ 9度弯曲干：斯科特Comp 4 Bolt/OS31.8mm 握把：斯科特锁定在握把轮圈：胸苷瑞士445d 32Hole /黑色接待中心：斯科特这盘光盘亲后轮：禧玛诺跳频- m525可溶性它盘辐条：胸苷瑞士冠军1.8毫米黑色前轮胎：燕子火箭罗恩26 * 2.1/50epi珠性能系列座邮编：斯科特comp/31.6mm 重量：2.35磅

The predicted cable voltage is about 70% of the measured values. Ancillary data (like sea level data from tide gauges and satellite altimeters) are needed for estimating respective contributions to cable voltage from Kuroshio, eddies, tidal current and noises.

经建立包含分层海水及地壳导电的二维模式，增加下层海水漏电的效应，黑潮流轴位置的影响，以及黑潮左右海底地形的不对称，终能模拟得到适当的电缆电压值。

To reveal aft end internal flow feature of a solid rocket motor with submerged nozzle, a two dimension cold flow test model with rectangular channel was designed The cold gas simulation was based on geometric similarity and aerodynamic analogy Mean and fluctuating velocity field was measured using phase doppler particle analyzer It showed that the flow separates at upstream of the submerged nozzle and reattaches on the tip of the nozzle nose A relatively steady recirculation zone formed in...

为了揭示含潜入喷管的固体火箭发动机尾部流动特征，按照几何相近和气动相似原则设计了通道为矩形的二维冷流实验模型，利用相位多普勒粒子分析仪对燃烧室尾部气流的时均速度和湍流脉动速度进行了测量。实验结果表明气流在潜入喷管入口上游发生分离，再附点位于喷管前端部外侧，背壁空腔内形成一个较为稳定的回流区，流场的轴向和横向湍流强度都比较大

Therefore, you must release the take the wheel and loosen its teeth in its teeth on the shaft by time cam control rocker, but equipped page machine in its wheel is compact, inconvenient demolition, and pick out the teeth and inspection of pressure on the relative position of the key is to detect many parts of the machinery in a manner worthy, opening the restore time, the earliest possible time to 2300 hours, easily affecting production.

因此必须松开叼纸轮的定位，并且松开叼牙轴上受叼牙时间凸轮控制的摆杆，但由于配页机的叼纸轮安装较紧凑，不方便拆卸，且叼牙与检测压力相对位置是检测多帖关键的机械部位，拆开后，还原时间长，最快也要二三个小时，容易影响生产。

Corolla blue to wine-red, rarely pink, white, or yellow, zygomorphic, inside glabrous, rarely sparsely puberulent; tube cylindric to funnelform-tubular, not swollen, rarely saccate at base, longer than limb, 2-13 mm in diam.; limb 2-lipped; adaxial lip 2-lobed, 1.5-3 X shorter than abaxial lip; abaxial lip 3-lobed, lobes equal or central lobe longer, apex rounded, rarely obtuse to acute.

对红色，很少粉红色，白色酒蓝色的花冠，或黄色，左右对称，里面无毛，很少疏生微柔毛；管状的筒部圆筒状到漏斗状，不膨胀，囊状在基部，长于瓣片，2-13毫米直径的很少；瓣片二唇形； 2裂的正面唇，1.5-3 X短于背轴唇； 3浅裂的背面唇，裂片等长或中央裂片长，先端圆形，很少钝到锐尖。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。