Copper is one of the essential microelements for plants. But in recent years, the abuse of copper bactericide and industrial pollution has led to the increase of copper content in environment such as in soil.

銅是一種高等植物生長發(fā)育過程中必需的重要微量營養(yǎng)元素欧美变态区另类，是許多胞內(nèi)酶所必需的組分或輔酶黄片一级毛片国产，它參與很多生理代謝過程，對作物的發(fā)育中文字幕福利、品質(zhì)欧美aaaaaaaa片、產(chǎn)量等有重要的影響。

In 1931, the Wisconsin research team proved the mammal nutrition must the third kind of element is the zinc; in 1961 Ananda S, Prasad and so on reported that "Iranian village sickness", has the short, the reproductive organ maldevelopment, to lack the iron liver splenomegaly, low-spirited, to be addicted to rests and so on sickness, the zinc treatment has the good effect; Various countries also one after another have the zinc denutrition the report which confirmed after the experiment, and discovered that the zinc medicinal preparation treats enteropathy extremity dermatitis to have the special effect.

鋅為人體必需的微量元素之一无码专区日韩精品无码字幕，其作用巨大自偷自拍亚洲一区二区，正引起社會各界的日益重視，被近代醫(yī)學(xué)界国产成人情侣在线手机免费观看视频、營養(yǎng)學(xué)界喻為人體的"生命之花"97国产乱伦无码、"智慧元素"www.zipai。1931年，威斯康星研究小組證明哺乳動物營養(yǎng)所必需的第三種元素是鋅最近中文字幕免费大全下载；1961年Ananda S无码3p，Prasad等報告"伊朗鄉(xiāng)村病"，有身材矮小日韩,国产黄色网站、生殖器官發(fā)育不良麻豆国产原创视频、缺鐵性肝脾腫大、精神不振美女的胸又www又黄的视频无卡顿、嗜睡等癥，鋅治療有良效人人操日日；各國也陸續(xù)有鋅營養(yǎng)缺乏經(jīng)實驗證實的報道中国一级黄片免费在线观看，并發(fā)現(xiàn)鋅劑治療腸病性肢端皮炎有特效。20世紀70年代末以后操逼冒白浆，我國各地有大量關(guān)于鋅缺乏病的報道乱伦视频综合网，以小兒為多見。

While, however, we persist in believing that a poet ought to know as much as will not encroach upon his necessary receptivity and necessary laziness, it is not desirable to confine knowledge to whatever can be put into a useful shape for examinations, drawing-rooms, or the still more pretentious modes of publicity.

但不論如何人人干,人人摸,人人操，我們堅持相信欧美一级婬片人妻大片，一個詩人應(yīng)該知道的越多越好，只要不妨害他必需的感受力和必需的懶散美女日韩欧美国产，而那種將知識的作用僅僅局限于應(yīng)付考試717秋霞电影网、客廳閑談或者當眾炫耀自夸的觀點是不足取的。

While, however, we persist in believing that a poet ought to know as much as will not encroach upon hisnecessary receptivity and necessary laziness, it is not desirable to confine knowledge to whatever can be put into a useful shape for examinations, drawing-rooms, or the still more pretentious modes of

可是91尤物国产大尺度福利网，我們雖然堅信詩人應(yīng)該知道得愈多愈好丰满熟妇乱又伦精品，只要不妨害他必需的感受性和必需的懶散性，如把知識僅限于用來應(yīng)付考試日韩综艺午夜在线看免费，客廳應(yīng)酬久久综合婷婷七月丁香，當眾炫耀的種執(zhí)那就不足取了。

Your transcendence is necessary beloved, necessary to the ascension of Earth.

你的超越是必需的高无码视频国产男人的天堂，至愛的人類姐久久综合，對地球的提升是必需的。

That is, it is absolutely necessary when you drive a car, to think, or it may be instinctual, but you have thought of it, to learn a language, to play the piano, to do your business, to do whatever you do, thought is necessary.

那就是强奷漂亮的女教师中文字幕,，當你駕駛一輛車的時候它是絕對必需的午夜激爽免费毛片，去想，或者它或許是本能的资源多高清视频黄色软件，但是你已經(jīng)考慮過它了一级免费黄片插插插，去學(xué)一門語言，去彈鋼琴欧美精品一色喲哟，去做你的生意你懂得视频网站，去做無論你做的什么日韩欧美一区二区视频，思想是必需的。

The former is necessary for equilibrium-controlled synthesis of peptide bonds while the latter is necessary for kinetically controlled synthesis of peptide bonds.

酰胺酶活性起水解或合成肽鍵的作用国产福利一区在线，因而對平衡控制的肽鍵合成是必需的欧美片在线观看；酯酶活性起轉(zhuǎn)移酰基的作用四川老熟女下边又黑又肥，因而對動力學(xué)控制的肽鍵合成是必需的91黄版短视频在线看。

With the help of RP-HPLC, the hydrolyzes of corn gluten meal were found to be rich in Pro and basic amino acid, such as Phe and Leu, which can be used as food additives to supply basic amino acid and to lower blood pressure.

利用反相高效液相色譜法對玉米黃粉蛋白酶解產(chǎn)物的氨基酸組成進行了測定，發(fā)現(xiàn)酶解產(chǎn)物中含有大量的Phe(Phenylalanine深夜久久久，苯丙氨酸)精品九久，Leu(Leucine，亮氨酸)等必需氨基酸和Pro(Proline亚洲精品笫一页国产精品，脯氨酸)91亚洲高清无码视频，他們可以添加到食品中來補充必需的氨基酸和降低高血壓患者的血壓，對綜合開發(fā)利用這一豐富的農(nóng)副產(chǎn)品具有重要的意義欧美自拍日韩免费观看。

Who shall be responsible for the aftermaths of insufficient capital investment necessary for safe production.

第十八條生產(chǎn)經(jīng)營單位應(yīng)當具備的安全生產(chǎn)條件所必需的資金投入精品不卡一区中文字幕，由生產(chǎn)經(jīng)營單位的決策機構(gòu)、主要負責(zé)人或者個人經(jīng)營的投資人予以保證欧美牲爱视频，并對由于安全生產(chǎn)所必需的資金投入不足導(dǎo)致的后果承擔(dān)責(zé)任无码中文字幕一级毛片。

Linoleic acid is an essential fatty acid, lack of essential fatty acids, all human system there will be abnormal.

亞油酸是人體必需的脂肪酸，如果缺乏必需的脂肪酸欧美性v，人體所有系統(tǒng)均會出現(xiàn)異常欧美性生活黄色网站。

Air and water are indispensable to life：空氣和水是生命所必需的東西

It was incredible that Robinson could survive in that kind of deserted island. ;羅賓遜能在那... | Air and water are indispensable to life. ;空氣和水是生命所必需的東西. | inferior a.劣等的,次的;下級的 n...

indispensable for：(必不可少的,必需的)

grateful for (感激) | indispensable for (必不可少的,必需的) | ripe for (成熟)

Leonine rhyme：非必需的必需

Laisa lahu qiran無緣 | Leonine rhyme非必需的必需 | Leopold sedar senghor桑戈爾

nec necessary：必要的,必需的

morn.--morning上午 | nec.--necessary必要的,必需的 | neg.--nego tiale可商議的,可商量的

needed：必要的,必需的

GovernmentAcronyms政府機構(gòu)首字母縮略詞 | Needed必要的,必需的 | NotNeeded不必要的

nonessential：非必需的

nonequilibrium thermodynamics 非平衡態(tài)熱力學(xué) | nonessential 非必需的 | nonessential amino acid 非必需氨基酸

required：必需的

算法(Algorithm) 必需的(Required) 推薦(Recommended) 可選(Optional)開放軟件基金會(OSF)的分布式計算環(huán)境. DCE是一個被廣泛接受的解決方案,用于開發(fā)和部署安全的开操网、企業(yè)級的分布式計算應(yīng)用,提供網(wǎng)絡(luò)安全精品日韩妖精视频网站、透明的服務(wù)分配和跨平臺通信的能力,

requisite：必需的

立法之初美利堅合眾國只有11個州加入聯(lián)邦,200多年過去了,如今其他所有的州都已參與其中,"several"一詞依然適用;眾議院議員"必需的(requisite)資格"也隨著社會的發(fā)展被賦予了更多的不確定的內(nèi)涵.

requisite book：必需的簿冊

required liquid capital 規(guī)定速動資金;規(guī)定流動資金 | requisite book 必需的簿冊 | requisite voucher 必需的憑單

requisite voucher：必需的憑單

requisite book 必需的簿冊 | requisite voucher 必需的憑單 | requisition 申請書;申報表;請購單