查询词典 lead

This paper has carried out careful thorough research according to the EDTA basic principle of the content of zinc in titration mensuration lead zinc mine, for its mensuration condition , has given steady, reliable analysis method and operating step , can offer guidance and basis for the inspection of lead mine in mining, metallurgical profession laboratory.

本论文根据EDTA滴定法测定铅锌矿中锌的含量的基本原理，对其测定条件进行了细致深入的研究，给出了稳定、可靠的分析方法和操作步骤，可为矿山、冶金行业化验室中铅锌矿的检验提供指导和依据。

The oxidation process of lead sulphate in the inner part of the grain, which is formed directly by anodizing lead, is much slower.

至于颗粒内部由铅直接生成的硫酸铅的氧化为二氧化铅就要缓慢得多。

For leting drop quality fuel plenty of normal heptane have no lead tetraethyl ,Therefore be unlikely there not be the lead pollution .

因为低品质燃料多含正庚烷而不含抗爆剂四乙基铅，所以不会有铅污染。

For leting drop quality fuel plenty of normal heptane have no lead tetraethyl ,Therefore be unlikely there not be the lead pollution .

因为低品质燃料多含正庚烷而不含抗爆剂四乙基铅，所以绝对不会有铅污染。

The lead concentrations of trees and soils in urban Guangzhou are measured in this study.The results show that:mean lead concentrations of tree and top soil are respectively 23.4 mg/kg and 63.9mg/kg.

本研究测定了广州城市树木和土壤的铅含量，结果表明：广州城市树木叶子和表土的平均含量分别为23.4mg/kg和63.9mg/kg。

His teacher asked him why didhim lead back such a tree? He said, Having the former experience andpassed the more than half distance, I chopped the tree for it looked not bad lest i should miss it and lead back nothing.

老师问他，怎么带这棵普普通通的树回来，他说：&有了上一次经验，当我走到大半路程还两手空空时，看到这棵树也不太差，便砍下来，免得错过了后，最后又什么也带不出来。&

Mol/m2s low light treament cause leaf-upgrowth stopping, flower withering and losing fruit-settle capability. Fruit-settle efficiency enhance in 400μmol/m2s low light maybe because high light's injury on flowers are reducing. 200μmol/m2s and 80μmol/m2s low light treament cause carborhybrate synthesis decreasing, prevent carborhybrate's transforming to flower, lead to fruit-settle efficiency reducing. 30μmol/m2s low light is close to light compensation point of peach tree, which cause nutrition lackness, lead to peach tree's mechanism declining eventually.

表明400μmol/m2s的弱光提高花朵向幼果的转化可能是400μmol/m2s的弱光减弱了强光对花器的伤害的原因。200μmol/m2s和80μmol/m2s的弱光下，叶片合成的碳水化合物减少，向生殖器官的运转受到抑制，分配量减少，生殖生长减慢，落花延迟且花朵向幼果的转化率下降；30μmol/m2s的弱光已接近光补偿点，导致桃树营养缺乏，株体机能降低。

Lead the vitriol canvasses business to lead the item of money Business enterprise brief introduction: The Hebei JiHeng group limited company with the fine chemical engineering product produce for predominate the industry, gather the section work as comprehensive sex business enterprise group of the integral whole, the main foundation chemicals contain chlorine gas, ion film alkali, diaphragm alkali, sulfuric acid, methyl alcohol...etc., is a scale of Asia biggest, the world is secondary to disinfect a production base, China is biggest to produce the base and China over the vitriol north China the biggest solution in region painful raw material in hot town medicine produces the base.

过硫酸盐招商引资项目企业简介：河北冀衡集团有限公司是以精细化工产品生产为主导产业，集科工贸为一体的综合性企业集团，主要基础化学品有氯气、离子膜碱、隔膜碱、硫酸、甲醇等，是亚洲规模最大、世界第二的消毒剂生产基地，中国最大的过硫酸盐生产基地和中国华北地区最大的解热镇痛原料药生产基地。

A flat roof covered with sheets of lead .Turning towards the prow, one had before one an innumerable flock of ancient roofs, over which arched broadly the lead-covered apse of the Sainte-Chapelle, like an elephant's haunches loaded with its tower.

你一转向船头，呈现在面前的是一片无边无际的古老屋顶，仿佛是一群铺天盖地的牛羊，而浮现在其上面的是圣小教堂后殿的铅皮圆屋顶，远望过去，好似一只大象后背上驮着教堂的钟楼。

They were given no protective clothing or breathing equipment, even though they were working in a small room and had to crawl into some of the lead-lined cabinets and grind the lead out.

给他们没有任何的防护衣物或呼吸设备，即使他们工作在一个小房间，并已检索到的一些带头内衬机柜及研磨带头作用。

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％。