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This paper has made systematic research about characteristics of soil water dynamic changes, water deficit of the root-zone of pear-jujube tree with regulated deficit irrigation, physiological control in the process of the water use and the stomal response mechanism of pear-jujube tree under the water deficit environment, and the effects of different deficit irrigation levels at different growth stages vegetative growth and repproductive growth of pear-jujube trees, and also its regulation mechanism.

针对西北半干旱区果业生产面临资源紧缺的现实,论文以该区特色经济果树梨枣树为研究对象,在西北农林科技大学旱区农业土工程教育部重点实验室、陕西省大荔县城关镇梨枣园分别开展了温室与大田试验,对调亏灌溉的梨枣树根区土壤分动态变化特征、分亏缺与复环境下梨枣树用过程、生理调控与气孔响应机理、不同生育期不同平亏处理对营养生长与生殖生长的影响及其调控机制等进行了较系统的研究,分析了各生育期不同亏处理对梨枣耗规律、产量、品质、作物系数、分利用效率及经济效益的影响,取得了以下成果:⑴通过亏处理与复。。。

In this article, the effect of different water pH (pH 5, 6, 7, 8, 9)on the secretion of nacre of freshwater pearl mussel Hyriopsis cumingii were studied with histochemical methods and transmission electron microscopy.

结果表明:在中性环境中,贝体能积极地从外界环境中吸收钙,并能旺盛地合成和分泌贝壳珍珠层及珍珠有机基质前体物质;持续的酸性环境导致贝体的钙严重丢失,并引起珍珠质分泌细胞对有机基质前体物质的合成和分泌能力减弱;持续的碱性环境虽能导致贝体对钙的积累,但珍珠质分泌细胞合成和分泌珍珠质有机基质前体物质的能力减弱;环境的酸性或碱性程度越高,对珍珠质分泌细胞的合成和分泌活动的影响越大。

1The soil water c haracteristic curves of four soil layers in this soil were consistent. The satur ated water content, field capacity, wilting coefficient and available water capa city decreased from top soil to bottom in soil profile.(2)The unsaturated hydra ulic conductivity was significant relation with the negative pressure head in ex ponential function and tended to stable when the negative...

土壤的饱和含量、田间持量、凋萎系数和土壤有效的含量均从土壤上层到下层呈降低的趋势;土壤的非饱和导率与负压头之间呈负相关的指数曲线变化,当负压头达到 10 k Pa时,非饱和导率降低到最小值,且基本趋于稳定;非饱和土壤扩散率变化于 1.1× 10 - 3~ 1.886× 10 - 3cm2 / min之间,非饱和土壤扩散率随含量也呈指数曲线变化。

Mats; Elevator mats; cleaning Agent Series: air fresheners;§à; hand sanitizer; disinfectants; surface wax; at the end of wax; maintenance wax; furniture wax; wood floor wax; free throw wax; from wax water; low foam carpet water; carpet stains in addition to agent; of foam agent; electrostatic dust lead agent; Degreaser; derusting agent; In addition to gel; wall cleaning agent; acidic, alkaline cleaning agents; stone wash water; bathroom cleaners; cement ash agent;àagent; aromatic ball; Bi Livzon; hundred Livzon; rub silver paste; rubbed copper water; stainless steel brightener; aluminum brightener; crystal hard powder; K2, K3 powder; Stone derusting agent; stone care agent; daily sundry goods series: indoor and outdoor environmental dustbin; the garbage bin; debris barrels; buckets; radius wastepaper basket; trash bag; folding ladder; Human word ladder; one meter Benchmarking Block; peracetic acid; 84 fluid; alcohol; to Su water; hydrochloride; thin materials; cleaning Ling; detergent; floor brush; Dunbur;ó; broom; dustpan;§°brush; Paper Chuai son; push snow shovel; towel; toilet paper; gloves; scouring pad; Tan Shannon; clean ball; wire cotton; labor supplies; cleaning service

空气清新剂;玻璃清洁剂;洗手液;消毒剂;面蜡;底蜡;保养蜡;家私蜡;木地板蜡;免抛蜡;起蜡;高低泡地毯;地毯除渍剂;化泡剂;静电牵尘剂;除油剂;除锈剂;除胶剂;外墙清洁剂;酸性、碱性清洁剂;洗石;浴室清洁剂;泥除灰剂;洁厕剂;芳香球;碧丽珠;百丽珠;擦银膏;擦铜;不锈钢光亮剂;铝品光亮剂;晶硬粉;K2、K3粉;石材除锈剂;石材护理剂;室内、外环保垃圾桶;果皮箱;杂物桶;桶;方圆纸篓;垃圾袋;折叠梯;人字梯;1米线标杆座;过氧乙酸;84液;酒精;来苏;盐酸;稀料;洗洁灵;洗衣粉;地板刷;墩布;笤帚;扫帚;簸箕;恭桶刷;皮揣子;推雪铲;毛巾;卫生纸;手套;百洁布;檀香;清洁球;钢丝棉;劳保用品;保洁服

At present, the main product has the fire sprinklers series, wet alarm valve, deluge valve series, the flow indicator series, water spray, water curtain nozzle series, the fire control valves series, PS20 ~ PS80 fire water cannons, PP24 ~ PP64 Fire bubble gun, PSKD30 ~ PSKD60 electric control fire water cannons, PHY Series storage pressure air bubble mixing device, such as the proportion of products in the domestic market by the user's consistent high praise, has great competitive advantage.

目前主要的消防产品有洒喷头系列、湿式报警阀系列、雨淋阀系列、流指示器系列、雾、幕喷头系列、消防控制阀门系列、PS20~PS80消防炮、PP24~PP64消防泡沫炮、PSKD30~PSKD60电控消防炮、PHY系列贮压式空气泡沫比例混合装置等产品在国内市场受到用户的一致好评,具有很大的竞争优势。

Densities of glycine in glucose-water and sucrose-water mixed solvents have been measured to 298.15 K by an oscillating-tube densimeter. Apparent molar volumes, limiting partial molar volumes and number of hydration of glycine have been calculated. The transfer volumes from water to sugar-water mixtures have been obtained and discussed in terms of the structural hydration interaction model.

利用精密数字密度计测定了甘氨酸与不同组成葡萄糖-、蔗糖、混合溶剂构成的三元系溶液的密度,计算了甘氨酸的表观摩尔体积、极限偏摩尔体积和理论化数,根据结构合作用模型讨论了迁移偏摩尔体积的变化规律,并与乙二醇-和丙三醇-等多羟基体系作了比较。

Open water before the gas plug screw, and then adding water until the run out from the pore water release, and then a few rotating shaft, such as to continue to take water that has been filled with water, and then close the gas plug, ready to start.

前拧开放气螺塞,然后加,直到从放气孔向外冒,再转动几下泵轴,如继续冒,表明已充满,然后关闭放气螺塞,准备起动。

According to the spot experiment result of bolt anchor-hold in the condition of draining water in the roof on haulage roadway, 11201 coalface, Chengjiao coalmine, the test facility was designed independently and the influence of the anchor-hold of the resin bolt by the draining water in the drill hole was studied.

结合城郊煤矿11201工作面运输巷顶板淋情况下锚杆锚固力现场测试结果,自行设计了实验装置,研究了钻孔淋对树脂锚杆锚固力的影响。在现场测试中,当钻孔的淋量小于128mL/min时,树脂锚杆的锚固力保持不变;当淋量大于583mL/min时,树脂锚杆的锚固力比无淋时的锚固力下降35%以上。沿巷道轴向布置卸孔,采用集中排放,同时加大锚杆支护的密度可以改善顶板淋时锚杆支护的效果

The changes in outflow facility and PSL are consistent with previous findings that correlate with increasing outflow facility during "washout". Therefore Y27 and washout may act through similar mechanisms that increase outflow facility by redistributing aqueous outflow through a larger area of the IW and JCT.

P.001 结论;Y27可以明显增加牛眼房流畅率、沿房丛内壁的有效滤过长度百分比和分离长度百分比。Y27的作用可能是通过重新分布房引流到一个更广泛的房丛内壁和JCT区域而发挥增加房流畅率的作用。

Peridotite xenoliths from Nüshan, Hannuoba and the Subei basin of the North China block have much lower water contents than those from other localities of the world (South Africa craton, New Mexico, Colorado plateau and basin and Range province of USA, South Mexico, French Central Massif and West Kettle of Canada). This difference is probably induced by the thermal erosion of asthenosphere during Mesozoic-Cenozoic period in the North China block.

结合已经发表的安徽女山和河北汉诺坝的橄榄岩数据,对比世界上其他地区橄榄岩的数据来看,华北的岩石圈地幔具有低的含量:华北橄榄岩的单斜辉石含量多<200×10^(-6),而世界上其他地区(包括南非克拉通、美国新墨西哥地区、美国Colorado高原、美国盆岭省地区、墨西哥南部、法国中央地体以及加拿大West Kettle地区)橄榄岩的单斜辉石含量多>200×10^(-6);华北的斜方辉石含量多<100×10^(-6),而世界上其他地区多>100×10^(-6);华北的橄榄岩全岩含量多<50×10^(-6),而世界上其他地区多>100×10^(-6)。

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。