The test results showed that with absorbent added into potassium fertilizer, the releasing velocityof potassium ions was slower than ordinary fertilizer.
室内实验证明，添加吸附材料可使改型钾肥释放钾离子的速度明显慢于普通三元复合肥。
2
He plans to begin measuring the velocityof the ions and their energy as soon as the prototype is ready to determine the thrust and efficiency of the engine.
他计划一旦确定了样机发动机的推力和效率，就开始测量离子的速度和它们的能量。
3
The stopping power of thermal plasma to heavy ions with low velocity is studied by using quantum scattering theory and dielectric response theory.