The primary factor determining this torque is the area difference between the front and back groove surfaces devided by the meshing line.

决定负力矩大小的主要因素是齿槽接触线两侧的投影面积之差。

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In this paper, we present a new method, which is entitled "the Function of Area Difference", to detect the pitch period of speech signal.

本文提出了一种新的检测基音周期的方法：“面积差函数法”。

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By the area difference between the piston and the plunger in their respective working Chambers, the hydraulic booster can transfer the input lower pressure into output high pressure.

水力增压器利用两工作腔活塞与柱塞面积之差，将输入低压转换为输出高压。

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"The difference is the developing countries have focused on public health, prevention and primary and prenatal care in the area of maternal mortality."

VOA: standard.2010.06.23

One small area of difference: Serve allows users to fund their Serve accounts with a credit card for a fee (2.9% plus 30 cents).

FORBES: American Express And Visa Squeeze Paypal's Crown Jewels

So we'll continue to work through that area of difference with the Russians because we believe that they can play a role, again, in pressing the Assad regime and supporting a political transition.

WHITEHOUSE: Press Briefing

This is an area of clear difference between the parties.

BBC: Extra university places pledged