氮平衡

As a key component of aquatic ecosystems,periphyton can absorb nitrogen and phosphorus contaminants,maintain matter metabolism and ecosystem balance in waters.Meantime,for its natural ability,namely, attaching on substrates and being harvested easly,it has become the research focus in recent decades.

周丛藻类作为水生生态系统的一个重要组成部分，能够吸收水体中大量的氮、磷污染物，维持水体的物质代谢和生态平衡；同时，因其自然的附着特性，易于收获，已经成为近几十年来的研究热点。

Company's main products are the series of tire vacuum valve, all kinds of colored valve, tire repair tools and Haoliao, wheel anti-theft screws, automotive supplies modified, China, the dismantling of import tires, balance-, four-wheel - Positioning system, nitrogen machines.

公司主要产品有各系列轮胎真空气门嘴，各种彩色气门嘴，轮胎修理工具与耗料，车轮防盗螺丝，汽车改装用品，国产、进口轮胎拆装机，平衡仪，四轮定位系统，氮气机等。

Business: professional wholesale, retail Household, the steam engine, high-pressure spray gun, disinfecting machines, and washing machines, polishing machine, refurbished machines, hair dryer, Caxie Ji, waxing machine, the closure of the glaze, the bubble machine , Tools, trucks and trolleys, the demolition of births, tyres Chongdan machine, balancing machines, Jusheng Ji, car repair faster detection tools, transfer coating of splitting tools, rust-proof chassis noise, cleaning tools, hotel supplies…… supplies, tools, machinery Magic shop.

经营范围：专业批发、零售吸尘机、蒸汽机、高压喷枪、消毒机、洗地机、抛光机、翻新机、吹风机、擦鞋机、打蜡机、封釉机、泡沫机、工具车、手推车、拆胎机、轮胎充氮机、平衡机、举升机、汽车快修检测工具、贴膜工具、底盘防锈隔音、清洗工具、酒店用品……用品、工具、机械的魔术店。

The levels of blood urea nitrogen and concentrations of some biogenic amines were also reduced in pigs given the diet with oat hulls, suggesting that oat hulls changed fermentation characteristics in the hindgut, possibly by altering the balance of the microbiota.

给仔猪饲喂燕麦壳也可以降低一些生物氨在血液中尿素氮的水平和浓度，得出燕麦壳很可能通过改变微生物的平衡来改变后肠的发酵特性。

On this basis,includ-ed commercial organic fertilizer was designed to three fertilization levels.

在有机生产条件下布置小区试验，研究了有机肥料对番茄生长、养分平衡和果实品质的影响，研究中采用农家堆肥、精制有机肥、沼渣为供试有机肥料，进行等氮投入，其中精制有机肥在此基础上额外设置了3个施肥水平。

The effect of different organic fertilizers on the growth、nutrient balance and fruit quality of tomato was studied in the organic agriculture field. The fertilizers used in the experiment were farm manure 、commercial organic fertilizer 、biogas residues and which under the same N input condition. and on this basis, included commercial organic fertilizer was designed to three fertilization levels.

在有机生产条件下布置小区试验，研究了有机肥料对番茄生长、养分平衡和果实品质的影响，研究中采用农家堆肥、精制有机肥、沼渣为供试有机肥料，进行等氮投入，其中精制有机肥在此基础上额外设置了3个施肥水平。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。