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None of the four models could work well in the scenario 2, under explored stock, however they got accurate results in scenario 1, regulated stock. The Schnute model work well in full explored stocks such as scenario 1, 3, 4 and 5, especially in low biomass stocks such as scenario 3, but not suitable to the under explored stocks such as scenario 2. The W-H model generally performed well in all kind of scenarios especially in scenario 1, 4, and 5. In the swordfish, xiphias gladius, fishery, estimation of W-H model and D-Fox model produced MSY about 14000 ton, very near the result of Prager in 1996.The author tentatively explored the suitable fishing condition for the models to stock assessment.

四种剩余产量模型在充分捕捞且管理良好的渔业1中评估效果较好而在捕捞不足的渔业2中效果较差;Schnute模型在充分捕捞的渔业如渔业1、3、4、5、尤其是在低生物量的渔业3中评估效果较好,但不适合评估未充分捕捞的渔业,如渔业2;Walters-Hilborn模型适用于各种渔业,尤其是渔业1、4、5;在过度捕捞渔业中如渔业3、4,模型对参数q的估计较其它参数接近真值;在北大西洋箭鱼渔业的评估中,W-H模型和D-Fox模型对MSY的估计约为14000吨,接近于Prager(1996)的结果。

The results indicate that the different thermal expansions and elastoplastic properties and distributed randomness of various mineral particles composed of oil shale will lead to the nonuniformity of thermal field, deformation field and stress field in heating process, which makes the particles of oil shale deform incompatibly: and the release of product pyrolysis results in irreversible damages of oil shale material and structure. These are the main reasons for the thermal fracture of oil shale. When oil shale is heated through thermal conduction, temperature transfers slowly, so the spacing between heating well and production well should not be kept too long. When difference exists in oil shale reservoir's properties, heating well should be chosen in the high conductivity region. Oil shale's stratification is vital for developing permeation zone in in-situ retorting. Oil shale will generate additional expansion force as it reaches its pyrolysis temperature, and stratification will be cracked first, so the oil shale stratification should be utilized to enhance its permeability.

研究结果表明:组成油页岩各种矿物颗粒热膨胀和弹塑性性质的不同及其分布的随机性,导致油页岩加热过程中温度场、变形场和应力场的非均匀性,使得油页岩颗粒间变形不协调和油页岩热解产物释放引起油页岩材料与结构性能发生不可逆的劣化损伤,这是油页岩发生热破裂的主要原因;热传导方式加热油页岩,温度的传递比较缓慢,加热井和生产井的间距不宜过大,对油页岩储层性质存在差异时,注热井应选择较高热导率的区段;油页岩的层理对油页岩地下原位开发形成渗透带至关重要,油页岩达到热解温度会产生附加的膨胀力,首先在层理处开裂,应充分利用油页岩层理赋存条件改造其渗透性。

Aim at Gudong oldfield design horizontal well in face of old well production, higher water cut、lower production risk, study confirm intraformational bed and configuration anatomise, Gudong 7P11 well horizontal interval along lateral accretion body, lie fifthly lateral stacking reservoir.

针对孤东油田老区水平井设计中,面临周边均有老井开采,含水较高、产量较低的风险,进行夹层识别和构型解剖研究。

As for hydration, I have to say that hyaluronic acid may not be commonly found in most budget brand moisturisers and serums, but if you spend some time searching around, you may come across another cheaper product that contains hyaluronic acid as well (if you\'ve found one, do let me know!). Other hydrating moisturisers may also work (e.g., Loreal\'s Hy drafresh worked well for me). Finally, for wrinkle smoothing, if skin is well moisturised, it will plump up and wrinkles will be less noticeable.

的确很多平价的保湿面霜和精华中并未添加透明质酸,但我相信你如果肯花时间的话肯定还是可以找到含有该物质的低价产品,我觉得其他保湿产品也很适合我;而对于皱纹,如果你能够作到良好的补水与保湿的话它们也会变的不明显了。

As for hydration, I have to say that hyaluronic acid may not be comm only found in most budget brand moisturisers and serums, but if you spend some time searching around, you may come across another cheaper product that contains hyaluronic acid as well (if you've found one, do let me know!). Other hydrating moisturisers may also work (e.g., Loreal's Hy drafresh worked well for me). Finally, for wrinkle smoothing, if skin is well moisturised, it will plump up and wrinkles will be less noticeable.

的确很多平价的保湿面霜和精华中并未添加透明质酸,但我相信你如果肯花时间的话肯定还是可以找到含有该物质的低价产品,我觉得其他保湿产品也很适合我;而对于皱纹,如果你能够作到良好的补水与保湿的话它们也会变的不明显了。

The take type transports the machine to develop to emphasize to want the function in mineral well that modern a luck produce lost,well nextly conveyance with inclined well conveyance .

带式输送机在现代化矿井生产的地面运输、井下运输和斜井运输中发挥着重要作用。

Based on the lessons from home and overseas study and investigation and construction in situ, different types of demonstration projects were successfully implemented in Tianjin, Cangzhou, Hengshui and Jiyang, such as "radial well of pumping salt water and replacing fresh water","recycling well of river water-rain floods-phreatic water","enhancing pumpage well by siphone-conectivity way"and has achieved good results under the condition of low-cost.

通过借鉴国内外经验和现场勘查设计施工,在天津、沧州、衡水和济阳等地成功建立了&抽咸换淡辐射井&、&河水-雨洪水-潜水循环利用井&、&虹吸连通增采井&等不同类型示范工程,取得了在低成本条件下的良好效果。

After extracted acousticwave properties, used the ratio of P-S velocity ,vacuity modules ratio, Poisson ratio and amplitude ratiometer to identify the property of fluid of BD1531 well,DF11S3 well and WZ1171 well. Obtained the quantity of these parameter in different fluid in the three wells.

综合利用纵横波速度比、岩石空间模量、泊松比以及幅度差比对莺琼盆地BD1531、DF11S3以及WZ1171井储层流体性质进行识别,得到了这几个参数在气层、水层和干层处的取值范围。

In order to do research on pipe flow and pump characteristics of polymer flooding and water flooding rod-pumped well in especially high water-cut stage, rheometric test aimed at production stream from polymer flooding and water flooding rod-pumped well in especially high water-cut stage has been made, and the characteristic of production stream in especially high water-cut stage is confirmed as Newtonian fluid. Experiments using different mediums about pipe flow and pump characteristics is made. Frictional resistance and coefficient of friction resistance of annulus fluid between sucker rod and the pipe flow is calculated under different working conditions. Frictional resistance between plunger and pump barrel under different parameters is calculated based on related theory of pump characteristic and the strained analytical model of oil-well pump. Besides, using the theory of slit flow and hydraulic -clamping pressure, the frictional resistance is calculated, and the error between the result and measured value is no more than 13%.

为研究特高含水期水驱及聚驱抽油机井管流特性与泵特性,本文针对特高含水期水驱及聚驱井采出液进行了流变性试验,确定了特高含水期油井采出液的性质属牛顿流体;利用不同介质,进行管流特性与泵特性试验,得到了不同工况下杆、管环空流的摩擦阻力和摩阻系数;根据泵特性相关理论和抽油泵受力分析模型,计算了不同参数下柱塞与泵筒间的摩擦阻力,并利用缝隙流与液压卡紧力理论对柱塞与泵筒间的摩擦阻力进行了计算,计算结果与实测值误差在13%以内。

As a new rodless oil production equipment, the ESPCP can be applied in high-viscosity, wax content, sand or gas content well, and radically resolve problems met by sucker rod screw pump applied in heavy oil production such as break of rod , offset-abrasion of rod tube and limit to apply in deep or deviation well .The unit also overcomes the low efficiency of ESP pumping high viscosity oil and especially applied in directional well .

潜油电动螺杆泵作为一种新型的无杆采油设备,可用于高粘度、含腊、含砂、含气原油的开采,从根本上解决了有杆螺杆泵在稠油开采中的抽油杆断脱、杆管偏磨和在深井、斜井中使用受到限制的问题,而且也克服了潜油电动离心泵输送稠油效率低的缺陷,特别适用于定向井的原油开采。

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推荐网络例句

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性,但我大喊,并在他们的方向扔石头让他们过的线索,远离我,以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。

Store this product in a sealed, lightproof, dry and cool place.

密封,遮光,置阴凉干燥处。