左右

The removal efficiency of COD is about 60%~70% and 80%, respectively.

试验结果表明：两种方法均能有效地净化废水，COD去除率分别为60%~70%和80%左右。

Under this condition a removal of COD of 80% will be obtained.

在此条件下，COD去除率近80%左右。

The result indicated that COD removal rate was about 40% when the system was stable.

结果表明，系统稳定后的COD去除率在40%左右。

The removal of CODcr: During the period of high temperature, when the hydraulic load increases gradually from 4.92 ml/L-d to 39.39 ml/L-d, the water quality of the effluent doesnt changes too much and the removal ratio stabilizes above 70% mostly; During the period of low temperature, the removal ratio of CODo can only reach 40% even if the hydraulic load is as low as 4.92 ml/L-d.

COD_的去除：高温时期，当水力负荷在4.92～39.39ml／L·d的范围内逐渐增加时，出水水质变化不大，去除率基本稳定在70％以上；低温时期，即使采用4.92ml／L·d的低水力负荷进水，COD_的去除率也只能达到40％左右。

Please call us and confirm your ticket around April 28. Mr. Coe: All right!

请在四月二十八日左右打电话来确定您的机票。

The correlation coefficient is increased by about 20%.

相关系数提高了20%左右。

When the field angle is 45°,coercivity decreases to about 85% of thatobtained at the angle of 0°.

当外场偏转45°时，剩磁矫顽力约为0°时的85%左右。

It was found that this epitaxial Co-doping raised the coercivity of the γR-Fe2o3 from 420 Oe to 770 Oe.

经这样处理后的γ-Fe_2O_3磁粉的矫顽力可由原来的420Oe增大到770Oe左右。

The cognizance of the case will last 2 days or so.

案件的审理将持续2天左右。

The red ribbon coils up the wheat and rice on the left and right of the cogwheel and hangs down, dividing the cogwheel into an upper and a lower part.

红绶向左右绾住麦稻而下垂，把齿轮分成上下两部。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。