Pyrites often contain several nonferrous metal and noble metal elementS and be possessed of comprehensive utilization.

The ore-hunting indicator is of calcite-potassium feldspar veins containing pyritohedron pyrite.

直接找矿标志为含五角十二面体黄铁矿铁方解石钾长石脉.

However , such materials are difficult to be fabricated without the appearance of a pyrochlore phase.

在铅基弛豫铁电材料的制备中, 很难避免焦绿石相的出现.

R . Schmidt ﹐ Descriptive Nomenclature & Classification of Pyroclastic Deposits & Fragments ﹐ Recomendation of IUGS Subcommision on the Systematics of Igneous Rocks ﹐ Geology ﹐ Vol.9﹐5﹐1981.

孙善平 ﹕国内外火山碎屑岩的分类、命名 、 历史及现状﹐《地球科学》﹐卷12﹐6﹐1987.

Schmidt ? Descriptive Nomenclature & Classification of Pyroclastic Deposits & Fragments ? Recomendation of IUGS Subcommision on the Systematics of Igneous Rocks ? Geology ? Vol.9? 5 ? 1981.

孙善平? 国内外火山碎屑岩的分类、命名 、 历史及现状? 《地球科学》? 卷12? 6? 1987.

Periods of volcanism are indicated by the presence of pyroclastic material in the formation.

群系中火成碎屑物的存在表明了火山酌的形成年代.

Pyroclastic rocks are a kind of transitional and complex rocks between lavas and sedimentary rocks.

摘要火山碎屑岩是介于溶岩和沈积岩之间的过渡类型岩石,岩类复杂.

Pengxian copper deposit is hosted by metamorphosed pyroclastic rock and basic intermediate lava.

彭县铜矿床含矿火山岩由各类变质火山碎屑岩及中基性熔岩所组成.

Pyroclastic Lamination-Maintains cool temperature in extreme heat.

火山层压 - 保持冷静,体温在极热.

Pyroelectric detector is actually a sensor sensitive to temperature.

摘要热释电型探测器实际是一种对温度敏感的传感器.

The growth conditions and dielectric as well as pyroelectric properties of TGSe are reported.

还报导了TGSe优质单晶的生长条件和它的介电、热电性能.

The dielectric permittivity and pyroelectric coefficient of Tb-modif ied Sr 0.61 Ba 0.39 Nb 2 O 6 crystals were measured.

用铽改性SBN晶体能有效地改善晶体的性质.实验测量了铽改性Sr0.61Ba0.39Nb2O6晶体的电容率和热电系数.

Near the transition temperature, a thermal hysteresis was found in dielectric, pyroelectric and piezoelectric measurements.

在相变温度区域里, 介电 、 热电和压电都有明显的热滞效应,具有一级相变特性.

In this paper, An automatic measuring system for pyroelectric coefficient has been set up.

本文作者建立并完善了一套铁电体热释电自动测试系统.

The ferroelectric thin films had good crystallization behaviour, excellent dielectric and pyroelectric properties.

该类铁电薄膜具有良好的结晶特性 、 优异的介电和热释电性能.

The discovery of pyroelectric effect is a base for laser and infrared detector.

热释电效应的发现,为激光和红外探测的应用奠定了良好的基础.

It is constituted with pyroelectric infrared sensor, telephone and detecting circuit.

该系统由热释电红外传感器 、 电话和检控电路组成.

The pyroelectric effect of polyvinylidene fluoride ( PVDF ) has great influence on the PVDF pressure transducer sensitivity.

聚偏氟乙烯 ( PVDF ) 压电薄膜的热电效应对PVDF压力 传感器的输出灵敏度影响较大.

With the typomorphic characteristics of galena pyroelectricity, prospecting in deep part of the deposit is discussed.

并利用方铅矿热电性的标型特征, 对矿床扩大深部找矿前景问题作了讨论.

An UV-spectrophotometry determination method for pyrogallic acid content was studied.

研究了用紫外分光光度法测定焦性没食子酸含量的一种新方法.

Object : To observe the oxygen derived free radicals scavenging of diterpenoid tanshinones by pyrogallol autoxidation systems.

目的: 探讨丹参二萜醌对邻苯三酚自氧化反应产生的氧自由基的作用.