2) accumulation
[英][ə,kju:mju'leiʃən] [美][ə,kjumjə'leʃən]
蓄积
1.
Effects of surfactant on accumulation,distribution and elimination of lead and cadmium in Carassius auratus;
SDBS对鲫鱼体内Pb、Cd的蓄积、分布与排出的影响
2.
Study on the accumulation in Ruditapes philippinarum(Adams et Reeve) in spikedCd sediment;
菲律宾蛤仔对Cd加标沉积物的蓄积实验
3.
Research on Tolerance and Bioaccumulation of Seven Species (Cultivars) of Plants' on Lead.;
7种高等植物对铅的耐性及其生物蓄积研究
3) amassment
[英][ə'mæsmənt] [美][ə'mæsmənt]
积蓄
1.
To explore the relations between amassment law of Lonicera macranthoides(White Cloud No.
通过分析山银花不同花期硒含量,探讨了山银花中硒的积蓄规律与土壤硒之间的关系。
4) volume
[英]['vɔlju:m] [美]['vɑljum]
蓄积
1.
Prediction model of volume and basal area growth rate for \%Cunninghamia lanceolata \%plantations.;
杉木人工林分蓄积和断面积生长率的预估模型
2.
With Larix olgensis plantation of the WangQing Forest Bureau as an example,the paper studied the growth trend of the basal area and volume,calculated the average growth rate of the plantation by pressler formula, analyzed the effects of thinning on the basal area and volume.
以汪清林业局的20块人工落叶松为例,对间伐林分的断面积和蓄积进行生长趋势分析,用普雷斯勒公式计算林分的平均生长率,分析不同间伐强度对林分断面积和蓄积的影响,结果表明:间伐林分在间伐初期的断面积和蓄积小于未间伐林分,但随着林龄的增大,间伐林分断面积和蓄积向未间伐林分渐近;间伐强度越大,年平均生长率越大;方差分析表明,不同的间伐强度对林分断面积和蓄积生长的影响差异显著。
3.
The results showed that the volume of 4m×2m area was the highest and the current annual increment of 4m×4m per hectare was the highest .
采用正交试验设计,对杨树人工林丰产栽培技术进行8a的试验研究,结果表明:4m×2m小区蓄积最高,4m×4m小区蓄积连年增长量最高;含碳酸盐黑钙土的干旱地区施磷肥最好;整地深度50~60cm为宜;最佳组合为每穴施磷肥150g、4m×2m密度、整地50~60cm。
5) Lead acid battery
铅蓄电池
1.
Study on the utilization of positive active mass in lead acid battery;
铅蓄电池正极活性物质利用率
2.
Study of additives for tubular positives in lead acid battery;
铅蓄电池管式正极活性物质添加剂的研究
3.
The effects of chargers on battery performance and the research status of charge regimes for EB lead acid battery were reported too.
简要介绍了国内电动自行车和电动自行车用铅酸动力电池的发展情况以及铅酸动力电池的最新发展技术,即水平铅布蓄电池、卷绕式铅酸蓄电池以及胶体电池;同时介绍了电动自行车用铅蓄电池的充电器和充电模式方面的进展状况;针对电动自行车对电池所提出的要求,指出铅蓄电池只要提高比能量、循环寿命及快充能力,凭借其优良的性能价格比,仍然是现阶段电动自行车以及电动汽车的首选电源。
6) lead accumulator
铅蓄电池
1.
The paper introduces ingredients of waste lead accumulator and effective way of produceing lead alloys and lead salt.
本文介绍了废铅蓄电池的组成和用以制取铅合金及铅盐的有效方法。
2.
Abnormal operation and failure in lead accumulator mainly involves increase and decrease of electrolyte,sulphidization,bend,rupture,short circuit,reversed pole of pole-plate,excessive separation of active substance,impure electrolyte,increase of internal resistance and overcharge of accumulator.
铅蓄电池常见的不正常运行和故障主要有电解液量减少或增多、极板硫化、极板弯曲、断裂、短路、反极、活性物质过量脱离、电解液不纯、内阻增大、电池过充等。
3.
The article explained the relation of lead accumulator e.
阐述了铅蓄电池电动势与放电强度及放电时间的关系、铅蓄电池电解质密度与放电强度及放电时间的关系,提供了一系列试验数据,对设计大功率铅蓄电池有一定参考价值。
补充资料:铅-铅测年
分子式:
CAS号:
性质:238U和235U两个母体铀同位素的特性实质相同,所产生的放射性成因206,207Pb的方程可合并为(207Pb/206Pb)=[(235U/238U)](t-1)。235U/238U现在的比值是1/137.8,利用非放射性成因‘稳定’204Pb作为参考同位素,作(207Pb/204Pb)与(206Pb/204Pb)的Pb-Pb等时线,应用方程计算年龄,式中(207Pb/204Pb)和(206Pb/204Pb)0是初始比值。
CAS号:
性质:238U和235U两个母体铀同位素的特性实质相同,所产生的放射性成因206,207Pb的方程可合并为(207Pb/206Pb)=[(235U/238U)](t-1)。235U/238U现在的比值是1/137.8,利用非放射性成因‘稳定’204Pb作为参考同位素,作(207Pb/204Pb)与(206Pb/204Pb)的Pb-Pb等时线,应用方程计算年龄,式中(207Pb/204Pb)和(206Pb/204Pb)0是初始比值。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条