a(b+c)读作atimes the sum b plus c,应该很好理解了。 a-(-b-c)读作aminus the quantity minus b minus c,使用quantity是英语语言习惯,避免plus和minus连在一起说。 2. 代数(2) 这几个单独拿来说事,是因为太重要了! 在国外课堂上,老师一边写公式一边嘴里叨咕着,公式里分数是很多,一般都念做over!因...
The utility model discloses a mould device used for bending sheet metal workpieces, in particular to a mould device used for bending the sheet metal workpieces to the angle of minus 90 degrees negative allowance. The mould device is characterized in that a bending lower die (1) is provided,...
The TEXT function will then put a minus (-) in front of the subtracted time value using “-H::MM” as the text format. Press ENTER and negative time will be displayed in F6. Step 2: Enter the formula in the rest of the cells. Note: You cannot drag the fill handle downwards, as...
Using high chloride emulsions and/or thin (<0.2 μm mean grain thickness) tabular grain emulsions all possible interchanges of the positions of BU, GU and RU can be undertaken without risk of blue light contamination of the minus blue records, since these emulsions exhibit negligible native ...
aThe constant K in Eq.(16-6)The minus sign in Eq.(16-6) indicates that if either the net tie-line power flow out of the area or the area frequency is, if the ACE is negative-then the area should increase its generation. 恒定的K在Eq。(16-6)减号Eq。(16-6)表明,如果净栓线功率流...
However, the mechanism set thereby is placed adjacent the multiplicand keyboard and between the said keyboard and the plus and minus keys in Figure 1. The key section 2002 (Figure 18) includes the usual differentially settable bar 120 which is set by the multiplier keys of the "2" to ...
▲点赞 2▼ importjava.time.Duration;//导入方法依赖的package包/类@OverridepublicbooleanisExpired(SqsMessage<?> sqsMessage){ Duration timeUntilExpiration = maxAge.minus(sqsMessage.getMessageAge());returntimeUntilExpiration.isNegative(); } 开发者ID:Bandwidth,项目名称:async-sqs,代码行数:6,代码来源:...
However, the important part of Equation 12 lies in the second half. Note the minus sign for the second term, meaning that this portion reduces the output voltage ripple. Focus on the switch resistance (RON) and the flying capacitor (CFLY). In a standard inverting charge pump, these term...
We have measured 132 transitions in the ν3 (CN stretching) fundamental and the corresponding bending and stretching hotbands of the cyanate anion, ranging from P (52) to R (66), with a tunable diode laser using the velocity modulation technique. The
Thermal conductivity of negative-thermal-expansion oxide, Zr1$minus;xYxW2O8 (x=0.00, 0.01)?temperature dependence and effect of structural phase transitiondoi:10.1016/S0038-1098(04)00378-3HASHIMOTOTSolid State CommunicationsT. Hashimoto, J. Kuwahara, T. Yoshidaa, M. Nashimoto, Y. Takahashi, K...