The effect of root on soil respiration was observed mainly before repining stage with fluctuation.种有水稻,根系对土壤总的呼吸影响主要体现在成熟期之前,且有相互消长的现象.Cost price, nowaday value, time, fluctuation rate, un - venture gainings rate are imp...
A firm secures a needed commodity and is protected against price fluctuation.公司得到需要的商品,而且不会由于价格变动而受损失.The erratic fluctuation of market prices is in consequence of unstable economy.经济波动致使市场物价忽起忽落。Sometimes temporal fluct...
On valves controlled remotely, the position indicators may be used for microswitch contact.当阀门处于远程时, 位置指示器可用于微动开关接触装置.All indicators of AFP surveillance system achieved the requirement of MOH.AFP病例监测系统评价指标均达到了卫生部的要求.The ...