1.
A rocket propellant consisting of a single substance or mixture that contains both fuel and oxidizer.
单元推进剂一种含有单一物质或燃料和氧化剂混合物的火箭推进剂
2.
This substance can be reduced to a single chemical and oxygen, by passing an electrical charge through it.
该物质可电解成一种化学单质和氧气。
3.
The amount of a specified substance in a unit amount of another substance.
浓度在某一单位物质中另一特定物质的含量
4.
uniform mixture
【治】均匀[单相]混合物; 均质[均一]混合物
5.
A New Element for Analysing Mass, Centrald, Inertial Moments and Products of Space Body--Element of Tetrahedral Mass
一种分析空间物体的质量、质心、惯矩、惯积的新单元——四面体质量单元
6.
Used before a mass noun to indicate a single type or example.
用于物质名词前表示单一种类或事例。
7.
Physics can be defined simply as the study of matter and motion.
简单地说，物理学是一门研究物质运动的学科。
8.
An element is a simple substance that cannot be broken up into anything simpler.
元素是一种单质，它不可能再分成任何更单纯的物质。
9.
All materials are made from different simple substances called "elements".
一切物质都是由一些各不相同被称为“元素”的简单物质构成的。
10.
a simple substance, mixture
单纯的物质、 混合物
11.
To join( two or more substances) to make a single substance, such as a chemical compound; mix.
使化合使（个或两个以上物质）成为单一的物质，如化学合成；混合。
12.
To join(two or more substances) to make a single substance, such as a chemical compound; mix.
使化合使（两个或两个以上物质）合成为单一的物质，如化学合成；混合
13.
the heat required for a fluid substance to break up into simpler constituents.
一个液体物质分解成简单成分所需的热。
14.
The Effects of the Pollution of Single Cd Element and Pb Element on the Accumulation of the Dry Material of Eulaliopsis Binatas;
Cd、Pb单一污染对龙须草干物质积累的影响
15.
A Production-inventory Model for Deteriorating Items with Variable Lost Sale Factor;
一种丢单因子可变的变质物品生产库存模型
16.
heat absorbed by a unit mass of a material at its boiling point in order to convert the material into a gas at the same temperature.
在沸点时一单位质量的物质为在同一温度下变成气体所吸收的热。
17.
The manufacture of thiamine from the simple substances present in the minimal medium does not take place in a single chemical reaction.
从最低培养基中的简单物质制造硫胺素，不是通过单一的化学反应。
18.
the molecular weight of a substance expressed in grams; the basic unit of amount of substance adopted under the System International d'Unites.
用克来表示一种物质的分子量；国际单位制所采用的基本物质的量的单位。