1) background concentration
本底体积分数
1.
Study on the near-surface atmospheric carbon dioxide background concentration in Taihu Lake catchment;
太湖流域近地表大气二氧化碳本底体积分数观测研究
2) integral background
积分本底
1.
This paper analyses the integral background of a low-background anti-Compton HPGeγ-ray spectrometer by measuring the integral background under three kinds of conditions: no shield,steel-lead complex shield,and steel-lead complex shield plus anti-coincidence.
本文对一套低本底反康普顿HPGeγ谱仪系统的积分本底进行了实验研究,测量了谱仪系统在无屏蔽、屏蔽室以及屏蔽室加反符合三种条件下的积分本底。
3) volume fraction
体积分数
1.
Effect of NO_2 combination at atmospheric pressure on measurement of its volume fraction by ultraviolet absorption;
常压N_2O_4合成对基于紫外吸收的NO_2体积分数测量的影响
2.
Quantitative solution of volume fraction of interface in cementitious composites;
水泥基复合材料界面过渡区体积分数的定量计算
3.
Research status of the volume fraction and the material properties of functionally gradient materials;
梯度功能材料的体积分数和物性系数的研究状况
4) volume ratio
体积分数
1.
The distributions and characteristics of non-metallic micro-inclusions of GCr15 and SS400 casting slabs in process of BOF-LF-VD-CC were analyzed by metallographic volume ratio method,in virtue of tracer method and electronic microscope.
结果表明,GCr15轴承钢显微夹杂体积分数为0。
2.
0-3 type modified PZT/PVDF piezoelectric composites with different volume ratio were prepared by High-temperature-pressing technique.
采用复合材料模压工艺,制备了体积分数不同的改性PZT(含铌的钛锆酸铅)/PVDF(聚偏二氟乙烯)压电复合材料。
3.
The influence of different volume ratios on the dielectric and piezoelectric properties of PZT/PVDF composites was studied and compared with the theoretical values proposed by Furukawa et al.
系统地研究了PZT体积分数对材料介电、压电性能的影响,并与Furukawa等人的理论预测进行了对比。
5) background buildup
本底积累
6) Φ(SO2)
SO2体积分数
1.
Control methods of the lance position, the furnace temperature, Φ( SO2) , the dregs type and so on each technological parameter of ausmelt converter were introduced briefly.
简要介绍了澳斯麦特吹炼炉枪位、炉温、SO2体积分数、渣型等各个工艺参数的控制方法,通过对工艺参数的有效控制将冰铜吹炼成合格的粗铜。
补充资料：本底噪声
分子式：
CAS号：
性质：也称背景噪声。指被测噪声源之外的噪声。它的存在影响对被测声源测量的准确性。如果被测声源噪声高于本底噪声10dB以上，则后者的影响可以忽略不计；若二者之差不足10dB，则必须对测量结果加以修正；若二者之差小于3dB，则测量结果无效。
CAS号：
性质：也称背景噪声。指被测噪声源之外的噪声。它的存在影响对被测声源测量的准确性。如果被测声源噪声高于本底噪声10dB以上，则后者的影响可以忽略不计；若二者之差不足10dB，则必须对测量结果加以修正；若二者之差小于3dB，则测量结果无效。
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