可延长的

The front part of the stock can be extended by the additional detachable unit, to move the bipod mount forward, if required.

股票的前部，可以延长额外可分离单位，动议两脚架安装着，如果需要。

PURPOSE: Clostridium difficile diarrhea is common in elderly patients and leads to prolonged hospitalization.

目的：难辨梭状芽胞杆菌感染型腹泻在老年患者中常见并可使患者的住院时间延长。

In the one half part, according to the strontium nature, thermodynamic calculation of correlative reaction and the principle of the vacuum aluminothermy reduction process, with the laboratory findings of preparation strontium by vacuum aluminothermy reduction compared and analyzed in different parameter conditions, a variety of factors which effect the decomposition rate of SrCO_3 and the percent reduction of strontia are gotten out. The factors include that the decomposition rate of SrCO_3 is influenced by different addition and pressure. They also include that the percent reduction of strontia is influenced by excess coefficient of reducing agent aluminium powder, the particle size of raw material or reducing agent, the pressure of barbecuing, temperature and reduction time. According to those, we can draw the conclusion as follows:(1) Decomposition temperature of SrCO_3 is decreased by adding carbon and alumina in different degree.(2) With quantitative carbon added under the vacuum condition, the decomposition temperature of SrCO_3 is decreased obviously, which can fall 150℃ compared with atmospheric pressure.(3) In keeping 1150℃ of 2.5h, under the 5Pa vacuum condition, the decomposition rate of SrCO_3 nearly keeps in 99% steadily.

在前半部分的真空铝热还原法中，根据锶的性质、相关反应的热力学计算及真空铝热还原法原理，通过对不同参数条件下的真空铝热还原法生产金属锶的实验结果的分析比较，得出了影响SrCO_3的分解率和氧化锶的还原率的种种因素，具体因素包括不同添加剂、不同气压对SrCO_3分解率的影响，还原剂铝粉的过量系数、原料与还原剂的粒度、制团压力、温度和还原时间等对氧化锶还原率的影响，得出具体结论如下：(1)添加碳和Al_2O_3能不同程度的降低SrCO_3的分解温度；(2)真空条件下加入一定量的碳可显著降低SrCO_3的分解温度，比之常压下可降低150℃之多；(3)在1150℃恒温2.5h、真空度达到5Pa的条件下，SrCO_3的分解率几乎保持稳定在99％；(4)氧化锶的还原率随还原剂过量系数的增大而增大，但是趋势越来越小，当过量系数超过25％后，氧化锶的还原率几乎不再增加；(5)氧化锶的还原率随原料与还原剂的粒度的变细而增加；(6)氧化锶的还原率随制团压力的增加而增加，但超过一定值后，氧化锶的还原率反而会下降；(7)氧化锶的还原率随还原温度的升高而增加；(8)氧化锶的还原率随还原时间延长而增加，在本实验条件下，超过2.5h趋于稳定。

The results showed as follow:①Chinese astringent persimmon were climacteric respiration fruit, the respiration climacteric stage occurred at speediness softening stage. Ethylene climacteric stage and respiration climacteric stage were almost occurred at one time.②The activities of EXP, PG, PE, CX all had increased, and EXP increased early with PG, PE, CX in turn in persimmon fruit during ripening and softening.③Concomitancy to fruit softening, ultrastructural changes in the mesocarp tissue were occurred at speediness softening stage, showed as disaggregation of middle layer of cell wall, appearance of fibre-like structures, disorganization of chloroplast and distortion of some mitochondria.

研究结果显示：①中国涩柿属呼吸跃变型果实，在其快速软化期出现呼吸跃变；乙烯跃变与呼吸跃变几乎同期出现；②在成熟软化过程中，EXP、PG、PE、CX的活性均有上升，EXP活性上升最早，随后依次是PG和PE、CX；PG活性上升幅度最大；③伴随果实软化，果肉组织超微结构在快速软化期中胶层解体、丝状体出现，叶绿体解体、部分线粒体变形；④1-MCP可延缓柿果实硬度下降，常温下延长保硬期5-7天。

In lens-induced experimental myopias of guinea pigs, increasing of MMP-2 and decreasing of TIMP-2 occur in posterior scleral matrix. This pair of disbalance of MMP-2 and TIMP-2 can cause abnormal growth of guinea pig's eyeball.

透镜诱导豚鼠实验性近视眼巩膜基质中MMP-2活性增强，TIMP-2活性降低，二者平衡失调可导致巩膜胶原的降解，巩膜壁变薄，引起眼球扩张，眼轴延长。

Results There was no obvious change in the ulstrasonographic characteristics and the pathology of the control group.The diameters,internal echo,the continuity of internal linear echo and epineurium changed correpondingly with time of compression in different model groups.

结果声像图表现：对照组与卡压前正常神经未见明显改变，各卡压组高频超声下均可观察到相应声像图变化，随卡压时间的延长，卡压两端内径逐渐增粗，内部回声逐渐减低，内部线性回声连续性差，神经外膜逐渐增厚。

Objective To develope a Slide-Traction Plate of epiphysis in Child, which can give the fracture a hard internal fixation, and will not restrain the growth of epiphysis.

目的：研制一种可随青少年儿童骺板生长而滑动的新型钢板，该钢板能保持骨折稳定，随骨骼生长而相应延长、对骺板生长无抑制。

The coarse filter in suction orifice can protect oil pump and increase filter service life.

吸油口粗过滤器可保护油泵并延长主过滤器的使用寿命。

The impeller can be used 90 years of the best self-balancing axial force hydraulic model, making pump bearings and mechanical seal life greatly extended.

叶轮采用90年代最优秀可自平衡轴向力的水力模型，使得泵轴承和机械密封使用寿命大大延长。

Long-term use of my company's full range of products that can maintain the whiteness of grass cloth, grass cloth to extend the service life compared to similar products and domestic, has the following advantages. 1, security, environmental protection 2, dosage Province 3, effective 4, 5 easy process, low energy consumption and time to the province.

长期使用我公司的全套产品可保持布草白度，延长布草使用寿命，和国内同类产品相比，具有以下优点。1、安全、环保2、用量省3、效果好4、工艺流程简单5、能耗低、时间省。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失