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1)  slow-release potassic
缓效K
2)  K-effective state
K效应
1.
The experimental results indicated that the lattice parameters of the alloy increase gradually and coefficient of thermal expansion of the alloy is positive from room temperature to 940℃ and the lattice parameters of the alloy decrease gradually and coefficient of thermal expansion of the alloy is negative and K-effective state exists in the alloy from 940℃ to 1 150℃.
结果表明,在室温至940℃范围内,合金的晶格点阵参数逐渐增大,线胀系数为正;在940~1150℃范围内,合金的晶格点阵参数逐渐降低,线胀系数为负,进行了K效应转变。
3)  Available potassium
速效K
4)  Effects of K fertilizer
K肥效应
5)  inhibition efficiency
缓蚀效率
1.
Weight losses of the steel N80 in static condition with high temperature high pressure and high CO2 and Cl-are tests for evaluating inhibition efficiency of TG500.
在高温高压高CO2和Cl-环境中,用静态高温高压模拟试验方法对不同浓度的TG500新型咪唑啉季铵盐缓蚀剂进行了缓蚀效率测试。
2.
The inhibitor is a negative catalytic and cathodic inhibitor and it owns good inhibition efficiency at the content of 300ppm.
实验表明 ,在静态海水中 ,浓度为 30 0mg/L的YKI - 0 5缓蚀剂能在 90 7A钢表面形成稳定的缓蚀膜层 ,是一负催化阴极型缓蚀剂 ,在实验周期内其对 90 7A钢的缓蚀效率较高 ;并用原子力显微镜 (AFM )和俄歇电子能谱 (AES)对该缓蚀膜的表面形貌和成分进行分析 。
3.
The relationship between inhibition efficiency and molecular structure of imidazole and its derivants was studied by quantum chemistry calculation.
结果表明 ,缓蚀效率 η与缓蚀剂分子的EHOMO,ELUMO和偶极矩D之间存在较好的多元线性回归关系 η =- 5 47EHOMO+10 8 2 1ELUMO- 8 2 8D - 39 90 ,相关系数r为 0 986 。
6)  Corrosion inhibition efficiency
缓蚀效率
1.
The temperature,concentration of acid,the quantities of overall alkaloid and corrosion time are the important factors of corrosion inhibition efficiency by measurement of weight lessen method.
40%的盐酸溶液(w=3%)中,30℃下,腐蚀时间为4 h,缓蚀效率最高达87。
补充资料:缓效肥料(slow available fertilizers)
分子式:
CAS号:

性质:又称缓效肥料(slow available fertilizers)或控释肥料(control release fertilizers)。肥料中含有养分的化合物在土壤中释放速度缓慢或者养分释放速度可以得到一定程度的控制以供作物持续吸收利用。使用缓释肥料的目的:(1)减少肥料养分,特别是氮素在土壤中的损失;(2)减少施肥作业次数,节省劳力和费用;(3)避免发生由于过量施肥而引起的对种子或幼苗的伤害。缓效肥料分三大类:(1)难溶于水的化合物,如磷酸镁铵等;(2)包膜或涂层肥料,如包硫尿素等;(3)载体缓释肥料,即肥料养分与天然或合成物质呈物理或化学键合的肥料。

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