When texts are available the term protohistory is often used.

The proton and electron are certainly long-lived.

质子与电子当然可算长寿了.

The electron continues to whirl about the proton.

电子继续绕着质子转.

That particular equality, the proton-electron charge balance, is open to a very sensitive test.

质子和电子的电荷完全相等这一点, 很容易用很灵敏的实验来检验.

The production of massive protonema immediately follows and then caulonema, chloronema and secondary rhizoides.

孢子萌发后直接产生块状原丝体;块状原丝体上产生轴丝体 、 绿丝体和次生假根.

Recent developments and applications of protonic conductors with perovskite structure were summarized in the present paper.

简要介绍了钙钛矿型复合氧化物氢离子导体开发及应用研究现状和应用前景.

An atom normally contains equal numbers of electrons and protons.

原子在正常情况下含有数目相等的电子和质子.

The charges themselves in either case are those of electrons or protons.

任一种情况下,电荷就是电子或质子的电荷.

Atoms are made up of electrons and protons.

原子由电子和质子构成.

They use the protoplasm in the vat as an energy source.

他们把灵魂装到一个大桶里作为能量来源.

Others are associated with the protoplasm of the cell.

其它一些与细胞的细胞质有关.

Attempts have been made to construct protoplasm in the lab.

已多次尝试在实验室里构造原生质.

I know the protoplasm is the basis of all animals and plants.

我知道原生质是动物和植物的基础.

This modifiability is one of the intrinsic qualities of living protoplasm.

这种可变性是生命原生质固有的性质之一.

And this shew that Protoplast Fusion and Mutagenisis were good for fungus breeding.

说明原生质体融合和诱变育种是筛选高效菌种的有效途径.

Basic work for the system establishment about protoplast culture and physiological research.

系统建立的基础性工作:原生质体培养与生理研究.

Generation of fungal protoplast is an essential tool for genetic transformation system.

原生质体是研究和建立真菌遗传转化系统的重要工具.

Objective To study simple preparation of protoporphyrin disodium using whole blood of animals.

目的利用非抗凝猪血简易制备原卟啉二钠.

Protoporphyrin sodium 20 mg tid po to 67 patients with hyperbili-rubinemia caused by hepatitis.

以原卟啉20mgtid口服治疗病毒性肝炎所致高胆红质血症患者67例,并以国内常用利胆退黄中草药治疗43例作为对照组.

Blood-Determination of free erythrocyte protoporphyrin-Fluorometric method.

血中游离原卟啉的荧光光度测定方法.

The porphyrin compound in human body mainly includes hemoglobin, protoheme, protoporphyrin, coproporphyrin , uro-porphyrin and so on.

人体中含有的卟啉化合物主要有血红蛋白 、 血红素 、 原卟啉 、 粪卟啉、尿卟啉等.