In order to get low surface roughness and high material remove rate, basic research on the optimization of process parameters in creep feed ultrasonic grinding engineering ceramics was conducted.

为了在加工中获得良好的表面质量和大的材料去除率，本文开展了蠕动进给超声磨削工程陶瓷参数优化的基础研究。

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For some reason people associate the word 'basic' with 'universal' and assume that everyone is entitled to the full-rate basic state pension when they achieve whatever retirement age is relevant for them to be entitled to payment.

BBC: Fergus Muirhead

The Conservatives' proposal essentially removes this limit and extends the tax privilege to all lower-rate and basic-rate income-tax payers who receive interest on their deposits.

ECONOMIST: Tax cuts

But the dividends are received by investors as if they have already paid basic rate income tax (the corporation tax rate is about the same as the basic income tax rate).

FORBES: Finally! A Sensible Idea About US Tax Policy