reaction mass

基本解释

The temperature measuring device is installed in a reaction still. The stirring direction of the protecting tube is aligned with the flowing direction of reaction mass.
该测温装置安装于一反应釜中，该护管按搅拌的方向正对反应物料的流动方向。
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In addition, to determine the optimum conditions of the process, the effect of reaction temperature, volume of feed water and reaction mass on conversion rate has been studied.
另外，分别研究了反应温度、反应给水体积和反应物料加入质量三者对纤维素、木屑、飞机草和花生壳在超临界水中液化转化率的影响，来确定出优化工艺条件。
On this foundation, this thesis reviewed the reaction of mass media on the Chinese culture - figuring of culture temperament, rewriting of thinking fashion and the reconstruction of value.
在此基础上，进而反观大众传媒对于中国文化的反作用——文化气质的塑造和思维方式的改写以及价值观念的重构。

The third mistake was that, because the workers were allowed to bypass the time-consuming mixing process in the tower, with its automatic controls for preventing such things happening, they were free to dump their material into a vessel that was not designed to prevent the accumulation of a critical mass sufficient to support a chain reaction.
ECONOMIST: All over in a flash
American political vocabulary is so limited and restrictive that whenever another country experiences some sort of mass political movement, or at least one that we find admirable, the first reaction is usually to directly compare it to the American Civil Rights movement.
FORBES: No, Leon Aron, the Russian Protests do not Echo the Civil Rights Movement