resistance of grain mass [粮食] 粮堆阻力
Thousand Grain Mass Method 千粒重法
air velocity through grain mass [粮食] 粮层风速
Grain mass sensor 平行梁冲量式谷物质量流量传感器
outdoor stored bulk grain mass 露天粮堆
mass density of grain 粮食质量密度
Impactabased grain mass senor possesses simple structure and can be applied easily, but it is sensitive to the base vibration caused by combine.
冲量式传感器具有结构简单、使用方便等优点，但容易受到基础振动的干扰。
In order to improve working reliability, increase grain mass, and achieve ignition and stage separation at the same time, a successful method is to apply an external igniter to solid rocket motor.
为了提高固体发动机工作可靠性，增加装药质量，同时实现二级点火和级间分离，应用体外点火器是一种成功的方法。
The influence of the groundwater seepage on soil mass comes to be true through the seepage force (the dynamic stress) on the soil grain.
地下水对土体的渗流作用是通过作用在土颗粒上的渗透力(动水压力)产生的。
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