水循环

It was found that moisture in the system of reaction is main reason that lead to deactivation of ionic liquids. The reaction mechanism of transalkylation reaction of methylnaphthalene and 1,2,4,5-tetramethylbenzene catalyzed by chlorine-aluminate ionic liquids has been proposed.

考察了离子液体的循环使用情况，分析确定了离子液体的失活原因，认为反应体系中的微量水使离子液体水解是造成离子液体失活的主要原因。

Nowadays, the application of mineralogy in environmental sciences is a major aspect of mineralogical studies.

矿物学在环境科学中的应用是当前矿物学研究的一个主要方面，矿物-水界面反应对环境中物质的循环和元素的地球化学过程起着十分重要的作用。

This imbalance in the global nitrogen cycle has led to uncontrolled nitrogenemissions into the atmosphere and water systems.

这种不平衡现象在全球氮循环，导致无节制氮气排放到大气和水系统。

Culture tender leaves in culture medium of MS+2,4-D1.5mg/L+30g/L suger+0.7% agar pH5.8 for 20 days in darkness at 25℃, and then subculture to induced Ⅱ-type calli. Use forceps cutting the tissue to nubble with 2mm2, and put the tissue into Agrodacterium tumefaciens LBA4404 liquid supplemented with AS 100mg/L,then, co-culture 3 days, resume 7 days in MS+2,4-D1.5mg/L+30g/L suger+500mg/L cef, take to MS+2,4-D1.5mg/L+30g/L suger+100mg/L cef+10.0mg/L kanamycin culture 20 days in darkness. After that to make it polarize in MS+30g/L suger+100mg/L cef+10.0mg/L km. The percentage of km resistant callus was reached max after infection for 45 min, the average is 29.66%. Simultaneity, tender leave callus are infected 5 min by A. tumefaciens liquid in different negative pressure, and kept on 15 min in Agrodacterium tumefaciens liquid without negative pressure. Then screen out resistant callus and obtain transgenic plants. When the negative pressure is -0.05MP the percentage of km resistant callus was reached max, the average rate is 37.5%.

将心叶接种于MS+2.4-D1.5mg/L+30g/L 蔗糖，琼脂0.7%，pH5.8 培养基中25℃暗培养20d 后继代一次，诱导产生Ⅱ型胚性愈伤组织，用镊子将其夹碎成2mm2大小的小块，置入添加100mg/L AS 的根癌农杆菌LBA4404 菌液中，侵染时间为45min，共培养3 天后，转入MS+2.4-D1.5mg/L+30g/L 蔗糖+500mg/L Cef 培养基中恢复7天，再转入MS+2.4-D1.5mg/L+30g/L 蔗糖+100mg/L Cef+10.0mg/L Km 中，遮光培养20d后，置入其MS+30g/L 蔗糖+100mg/L Cef+10.0mg/L Km 分化，卡那霉素抗性愈伤组织获得率在侵染45min 时达到最大值平均为29.66%；同时以甘蔗心叶愈伤组织材料，通过循环水式真空泵，产生负压，设定不同的负压值，在农杆菌菌液中感染5min 后，在负压条件下继续侵染15min 后，筛选出抗性愈伤组织并获得转化植株，其中在负压为-0.05 时转化率达到最大值，其卡那霉素抗性愈伤组织获得率平均为37.5%。

Optimal control of circulating water system is an important item in energy saving of power plant.

循环水系统作为火电厂的重要组成部分，其优化问题已引起人们的高度重视。

Focuses the researches on a eutrophication model after drainage of waste water and drawing water from the Qiantang River to the West Lake,the state variables in the model are phosphorus in algae cells,orthophosphate,phosphorus in detritus and phosphorus in sediment.

报道了杭州西湖截污和引灌钱塘江水后的一个富营养化模型。它按照年度描述西湖生态系统中的磷循环。状态变量有浮游植物磷、正磷酸盐、碎屑磷和沉积物磷。

We also did some fun science projects to study rain, osmosis, the water cycle and plants.

我们还了解了有关天气的变化，如雨季，水的循环和植物。

The pressure discharge ability for the heating system with circle water pump parallel connected side connecting line with different diameter has been calculated and compared. Resalable diameter for side connecting line is defined to ensure system safety, mainly for radiator safety at heat users, when the pump is off.

对上述所产生的水击，该供热系统循环水泵并联不同管径的旁通管及使用不同型式的止回阀，计算其泄压能力并对结果进行比较分析，确定合理的旁通管管径，使其供热系统在停泵时保证系统的安全，主要是热用户处的散热器的安全。

Don't shave your legs before they're exposed to circulating water in a pedicure spa.

不要在把脚放入足疗矿泉的循环水前修你的脚。

The Benson-Calvin cycle is restricted to the BS cells, minimizing photorespiration and allowing increased carbon, nitrogen, and water use efficiency.

在本森，卡尔文循环的限制细胞的学士学位，尽量减少光呼吸和使更多的碳，氮和水的使用效率。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。