有效鉛 的英文怎麼說
中文拼音 [yǒuxiàoqiān]
有效鉛
英文
available lead-
Mt - may detoxify lead effectively
Mt -可能有效地解鉛中毒。Tetraethyl lead worked in “ leaded ” gasoline but was phased out because it spoiled catalytic converters
有鉛汽油中的四乙基鉛效果不錯，但已經逐漸淘汰，因為它會破壞觸媒轉化器。Abstract : the ashing loss of pb in water samples has been studied in digestive method for determination of lead by dithizone spectrophotometry ( gb 5750 - 85 ). after the digestive conditions are improved, the digestive loss of pb in some polluted water samples is prevented. the recovery of pb rised, the accuracy and precision of the analytical date are guaranteed
文摘:對國標5750 - 85雙硫腙分光光度法中消化水樣時鉛的灰化損失進行了探討，針對某些污染嚴重的水樣，改進了消化處理的條件，有效地消除了灰化損失，提高了鉛加標回收率，保證了分析測試數據的精密度和準確度。Determining valid vertical space in observation hole of dike - dam
大壩觀測孔有效鉛垂空間的確定The results showed that the effects of pb + on esterase isoenzyme activity are not only the activation but the inhibity as well. there were different effects of pb2 + on est isoenzyme of the major tissues
結果表明：鉛對長江華溪蟹酯酶同工酶的活性影響既有激活作用又有抑制作用，並存在組織差異性和劑量效應。In order to choose the plants that were hypertolerant to heavy metals and for the case of phytoremediation of soils that were polluted by heavy metals, the research was carried out by the methods of soil - planting and sand - planting in green - house. the study includes selecting the hypertolerant plants from 36 dominant species found in the vicinity of a pb / zn mine tailings pond, observing the ecophysiological response of the hyperaccumulators, improving - impact of hyperaccumulators on biosolds and examining the effect of nutrient elements ( n p k ) on the lead uptake
為選擇和篩選富集重金屬或對重金屬具有耐性的植物，以達到利用植物修復重金屬污染土壤的目的，本研究通過溫室砂培和土培的方法，對生長于鉛鋅尾礦區的36種植物進行了篩選，研究了富集植物品種對重金屬pb的生理生態效應、對重金屬pb的吸收和耐性以及對污泥的響應，並探討了土壤中的營養元素n 、 p 、 k對植物吸收pb的影響，為植物修復工作提供理論依據。Constrained to technologies, the lead - acid battery mainly adopted traditional charging methods such as constant voltage, constant voltage with current limitation, constant current, etc. the charging current of these methods cannot match efficiently the acceptance curve of the lead - acid battery proposed by j. a. mas. as a result, some of these methods have a low time efficiency and incompleteness charging. and some of them lead to overcharge and gas - generation, which will result in low - efficiency, time - consuming and prone - to - damage of the charging operation
鉛酸蓄電池由於受到技術條件的限制，其充電主要採用恆壓、恆壓限流、恆流等常規充電模式，這些方法的充電電流未能有效的遵從馬斯所提出的可接受充電電流曲線，因而有的充電方法時間效率低、充電不完全;有的則存在著過充電和析氣等現象，並導致充電過程的低效，耗時和易損。During the three decades lately, a number of experimental study used to resist horizontal and vertical loads of spread foundations are carried out worldwide
近三十年來，國內外對承受水平和鉛直荷載的輸電線路桿塔基礎進行了大量卓有成效的試驗研究。Streptomyces low copy number plasmid scp2 * is also employed for the cloning and recovery of large dna fragment from streptomyces. as scp2 * can accommodate large dna insertions and is efficiently transmissible among its permissive hosts such as s. lividansbut seemed to be unable to replicates in streptomyces sp. fr - 008, it might be a suitable vector for the cloning of the entire fr - 008 pks gene cluster through gene replacement followed by conjugation with 5
Scp2 *可以在變鉛青鏈黴菌等許可宿主內復制並在許可宿主間有效轉移，但似乎不能夠在鏈黴菌fr - 008中復制，因此可能適合於在鏈黴菌fr - 008中通過進行基因置換及隨后的鏈黴菌fr - 008和變鉛青鏈黴菌間的接合過程來克隆完整的fr - 008生物合成基因簇。From the experiment we have found out that the carbon fibre can improve the anode performance when it was used as pam additive and meanwhile it can have some benefits to the anode life. when its content at 0. 2 - 0. 3 % in pam can achieve its best result and under this situation it can improve the utilization of pam by 5 % at different discharge current. carbon fibre and sulfate sodium is used as complex pam additive and its effect is better than that of carbon fibre which alone is used as additive
通過實驗我們發現，碳纖維作為鉛酸電池的正極活性物質添加劑能提高鉛酸電池正極的性能，並且對電池正極板的壽命有一定的好處，當碳纖維在正極活性物質中的含量為0 . 2 0 . 3能得到最理想的效果，這個時候能在各種不同的放電電流下提高正極活性物質的利用率5左右，並且能夠使極板的電化學阻抗降低。To investigating the damping effect under other types of ground motion, this paper constituted a three dimensional finite element model, in which the flange is simplified as an elastic joint and the dampers are as bar elements
考慮到斷路器結構體系可能產生的扭轉效應，本文建立了三維的有限元計算模型。模型中，瓷柱之間的連接法蘭採用較為成熟的彈性連接模型，鉛合金減震器簡化為塑性桿單元。The investigation of structure by x - ray diffraction shows that crystal parameters changes clearly when percenting ca and la into pbtio _ 3, it was caused by the ca ion and la ion replaced the pb ion of a position in perovskite compound, that bring lattice mismatch and asymmetrical replace
在pbtio _ 3中摻入la和ca可以有效改變薄膜的晶格常數，這是因為在abo _ 3型化合物中，鈣離子、鑭離子取代了a位的鉛離子，造成晶格失配和不對稱取代。The residues of secondary zinc oxide is a kind of secondhand resource which can be reused, there are many kinds of valuable elements contained in this slag, such as zinc, lead, arsenic, antimony, silver and scare metal indium, the comprehensive utilization of secondary zinc oxide have both reasonable value and society benefits
摘要次氧化鋅廢渣是一種可利用的二次資源，含有鋅、鉛、砷、銻、銀以及稀散金屬銦等金屬元素，綜合利用次氧化鋅有經濟價值和社會效益。In this study, precursors have been prepared by coprecipitation. the precursors prepared by coprecipitation have high purity, homogeneity and reactivity etc. thus it can decrease synthesis temperature and pbo volatility. furthermore the pyrochlore phase is hardly formed during synthesis
通過化學共沉澱法制備前驅體，使各組份能以原子尺度進行混合，提高反應活性，有效降低合成溫度，最大限度地減少鉛揮發造成的污染，同時避免焦綠石相的生成。Xth series welding platform is provided with 3 lower sucking hoods plus i side lower sucking hood so as to effectively catch all the lead flame resulting from the welding operation
Xth系列焊接工作臺， 3個下吸罩，外加一個側下吸，從而有效的捕捉焊接所產生的鉛煙。每個吸罩都帶有風量調節裝置。Abstract : in this paper, a kind of technological scheme for one - step precision forging spur gear with large module is put forward by using positive friction role. experiment, in which commercial pure lead is taken as test material, is done in the special die designed, and force vs. stroke curve is recorded. it is shown that positive friction role can efficiently make a contribution to the filling of the tooth cavity, but increase forming force
文摘:針對大模數直齒圓柱齒輪，提出了利用積極摩擦一步成形的工藝方案，並用工業純鉛作為試驗材料，在設計的專用模具上進行試驗，記錄了力? ?行程曲線，結果表明：利用積極摩擦作用能夠有效地保證直齒圓柱齒輪精鍛時齒腔充滿，但同時增加了變形力。In order to lower the comsumption of reagent, the stability experiments of pb midst standard solution were carried out, which shows that three months storage of the solution has no significant change for the experiments
為了降低試劑消耗，本文進行了鉛中間標準溶液穩定性實驗，結果表明，鉛中間標準溶液可有效保存三個月，效果令人滿意。In this paper, soil microbial ecological characteristics and their influence mechanism in red soils contaminated with heavy metals were studied using the incubation experiment, and field investigations. some sensitive microbial ecological indexes and kinetic parameters were brought forward under the single pollution of cadmium or lead, and cadmium - lead - copper - zinc compound pollution ways, respectively, which will be useful reference for bioremediation, environmental quality evaluation and building up alert index systems in red soils polluted by heavy metals
本項目選擇紅壤作為研究材料，採用室內培養、野外調查以及相關數學分析相結合的研究方法，探討了重金屬污染紅壤的微生物生態特徵及其影響機制，提出了鎘、鉛單一污染和鎘、鉛、銅、鋅復合污染下紅壤微生物學敏感性生態參數及其動力學變化特徵，為重金屬污染土壤的修復、環境質量評價以及建立有效的土壤重金屬污染預警指標體系提供有益的參考。It is not only a radiotherapy reform but a practical and effective treatment that the moulding of low - melting - point lead is used to supplement conventional and normal lead block
摘要用低熔點鉛合金澆鑄的辦法補充傳統的標準式鉛擋，是放射治療界進行普通放療的一項改革，也是一種切實有效的治療方案。System structure : “ shuangdeng ” gfm vrla battery can be installed by cabinet, shelf, and ground arrangement, thermal dissipation space has been laid out to effectively avoid thermal runaway
系統結構： 「雙登」 gfm型閥控密封鉛酸蓄電池既可採用櫃、架安裝，也可地面排放，單體間預留了散熱空間，能夠有效防止電池熱失控。分享友人