1) dissimilar subtraction method of soil fertility
地力差减法
2) Soil fertility decrement
地力差减
3) subtraction method
差减法
1.
The last step is that calculate the contents of SiO2 by subtraction method.
石英砂是玻璃厂主要的原材料,其主要成分SiO2的测定采用HF-H2SO4处理,使硅逸去,杂质成分在800℃灼烧称重,差减法计算SiO2的含量。
2.
The last step was calculating the content of SiO2 by subtraction method.
测定石英砂中SiO2的含量时,通常先用HF-H2SO4处理,使硅逸去,然后在800℃下灼烧、称重,利用差减法计算。
3.
Therefore,the subtraction method was used for determination of COD of high chloride wastewaters with high COD and low COD.
用国标法测定高氯废水的COD时易产生较大误差,且误差随着C l-浓度的增加而增大,为此采用差减法分别测定了含高COD和低COD浓度的高氯废水的COD值,结果表明,含高COD和低COD浓度的高氯废水,分别在C l-<12 500 mg/L和<8 000 mg/L时,测定误差在5%以内,满足国标允许范围,而超出此值时则易产生较大误差。
4) difference titration
差减滴定法
1.
Determination of mercury in mercury polluted soil by EDTA difference titration;
EDTA差减滴定法测定汞污染土壤中汞
5) disappearing differences method
差别渐减法
6) ground stress deviation
地应力差
1.
The stress deviation-creep curves and time-stress deviation-creep surface were gotten by scientific calculation, and it is proved that ground stress deviation is the main reason for creep of rock in deep mining.
得出了地应力差是引起蠕变的主要因素,对深层软岩巷道进行了变形仿真分析,并实现了与实测变形的对比。
补充资料：差差
1.犹参差。不齐貌。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条