查询词典 cod end

The invention discloses a method for measuring seawater chemical oxygen demand by photometry, wherein the seawater exemplar is first pre-processed, then using the basic potassium hypermanganate as reaction system, the potassium permanganate is deacidized quantitatively by organics to produce manganate, using pure water or margin solution as reference ratio, measuring the absorbance an of the manganate at its maximum absorbing wave length 430 nm, drafting the A-COD value operating curve, obtaining the concentration of the organics in the water, i.e.

本发明公开了一种对海水化学需氧量进行测定的光度测定法，该方法首先将海水样品进行预处理，再以碱性高锰酸钾为反应体系，这样海水中的有机物在强碱性介质中与过量的高锰酸钾迅速反应，高锰酸钾被有机物定量还原后生成锰酸盐，以纯水或空白溶液作参比，在锰酸盐的最大吸收波长430nm处测其吸光度A，该吸光度A与海水样品中的有机物的含量具有正相关关系。

The maximum relative standard deviation is 3.23%, which is close to that of the determination to low concentration COD samples.

本文利用顺序注射的特点，在COD测定加热的等待时间里，进行氨氮和pH的测定，使三项测量的时间大大缩短。

If you have red, each time after washing good buttocks ointment or 5% tannic acid or first smear mercurochrome, dry and then paint on cod liver oil, and then drying with hair dryer, if破皮, most have a fungal infection can apply Tatsu Knin cream.

如果已经红了，每次洗好臀部后用5%鞣酸软膏或或先搽红汞，干后再搽鱼肝油，然后用电吹风吹干，如果已破皮，多数有霉菌感染，可搽达克宁软膏。

A new technique for measuring COD of refinery waste water with microwave sealed digestion apparatus was developed using copper sulfate as catalyst.

建立了以CuSO4-MgSO4为催化剂、800W微波功率进行一定时间的微波消解测定炼油污水的化学需氧量的新方法。

In general, the upstream COD tended to be the highest, followed by midstream and downstream.

从总体趋势看，COD浓度的变化规律是：上游＞中游＞下游。

Grown alone, Rhizome of Oldworld Arrowhead , water lettuce, and Brazilian milfoil, have a DO increase rates of 62.5%, 50% and 50% in water respectively; Besides the total removal efficiency of BOD are 93.26%, 90.27% and 92.38%; What's more ,the total COD removal efficiency are 76.02%,, 71.58% and 79.76%. respectively.

单独种植的慈姑、大薸、穗状狐尾藻供试水体中DO的升高率分别为62.5%、50%和50%；对BOD的总去除率分别为93.26%、90.27%和92.38%；对COD的总去除率分别为76.02%、71.58%和79.76%。

Using three different types of living aquatic plants Rhizome of Oldworld Arrowhead, water lettuce, and Brazilian milfoil as test materials,we study a single planting of that three aquatic plants' impact on eutrophicated water DO, BOD, COD.

中文摘要：选择三种不同生活型水生植物慈姑（Sagittaria sagittifolia 、大薸、穗状狐尾藻为试验材料，研究了单一种植这三种水生植物对富营养化水体中的DO、BOD5、COD的影响。

I have been to her to eat the cod liver oil peter moller Norway.

我一直给她吃挪威peter moller的鱼肝油。

It has high removal rate for COD and NH〓-N etc.

反应器对COD和NH〓-N等污染物均具有很高的去除效率。

The results indicate that excellent nitration of NH,-N need the sufficient removal of COD to prevent the restrain of toxicant on the nitrobacteria.

指出NH_3-N完全硝化的前提是废水中COD的充分降解，以消除有毒物质对硝化菌的抑制作用。

Chinese traditional virtue is humility and wariness,the compliment and praise to the others should be declination

中国人的传统美德是谦虚谨慎，对别人的恭维和夸奖应是推辞。如

We bought this house on the never-never.

我们以分期付款的方式买下这座房子。