易膨胀的

The present research situation about AB process in and out of our country was analyzed in this paper. In addition to a concentrated study of the factors affecting sedimentation performance of A-step activated sludge, the rule of microbe multiplication, yield of activated sludge in A-step and treatment of low-concentration sewage were also involved in this paper. The main conclusions are as follows:(1) The study on factors affecting sedimentation performance of A-step activated sludge shown that the inflow SS distinctly improve sedimentation performance of activated sludge, the less influent SS makes the sludge bulking easy, and the pythogenous sewage evidently worsen sedimentation performance of activated sludge.

本文分析了国内外AB工艺的研究现状，对A段活性污泥沉降性能的影响因素；A段的微生物增殖规律、活性污泥产量以及A段工艺处理低浓度城市污水等问题进行了试验研究，得出了以下结论：（1）对A段活性污泥沉降性能影响因素的研究表明：进水中的SS对污泥沉降性能有明显的改善作用，如果进水中SS较少，易导致污泥膨胀；而腐化污水对活性污泥的沉降性能有显著的不良影响。

Consolidation test is a important link of obtaining mechanical properties index of soil and coefficient of compressibility gained through the test is a key data to evaluating the compressibility of soil. Consisting of solid phase and liquid phase of the salty soil is different from the non-salty one. Eutectic salt in soil may exist as liquid phase, solid phase or both of them and these phases can interconvert because it is affected by temperature, Na_2SO_4 content, water content. Especially when temperature drops, Na_2SO_4 will crystallize and expand, namely salt expansion of soil. These particularities make soil sample put in environmental cabinet when consolidation test is going on. So soil sample can be compressed by temperature controlling system under a set temperature.From experiment, the formulae counting coefficient of compressibility of salty soil have been given.

土的固结试验，是取得土的力学性质指标的一个重要环节，因为土的固结试验所取得的压缩系数，对评价土的压缩性是一个关键数据，但由于盐渍土的固相、液相组成和非盐渍土不同，土中易溶盐受温度、含盐量、含水量的影响可以以液相、固相、液相和固相混合形式存在，且它们之间的存在形式可以相互转换，尤其是当温度下降时，硫酸钠便结晶产生体积膨胀，即盐胀，这些特殊性就使得在进行硫酸盐渍土的固结实验时，须将土样放置在环境箱中，通过温度控制系统使土样在设定的温度下受压产生变形。

Seed cones ovoid-globose, 2.5-5 cm; apophyses slightly swollen; needles slender, 7-12 cm × ca.

卵球状球形的球果，2.5-5厘米； apophyses稍膨胀；纤细的针叶，7-12厘米*约1毫米，易弯；第1 年的小枝通常有白霜 9d var。

Difficulties encountered in the demolition, we recommend that you use the demolition of the instrument simultaneously pull outward on the inner ringcareful hot oil, thermal expansion will bearing inner ring, making it easier to fall off.

在拆卸遇到困难时，建议您使用拆卸工具向外拉的同时向内圈上小心的浇洒热油，热量会使轴承内圈膨胀，从而使其较易脱落。

All the test results showed that this water-in-oil emulsion fracturing fluid posseses such advantages as good themal stability, good shearing stability, low filter loss, low hurt, good restrainting the inflation of clay material, easy breaking of emulsion and flowback and so on, and then it can replace the conventional oil base gel and be used in fracturing the low pressured and strong water sensitive reservoirs of Gars oil field, Qinghai Province.

研究结果表明，该油包水乳化压裂液具有热稳定性好、耐剪切、低滤失、低伤害、能够较好的抑制粘土水化膨胀以及易破乳返排等优点，可以代替常规油基冻胶压裂液用于尕斯油田中浅层强水敏、低压油藏的压裂改造。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。