Rotary ultrasonic machining is an effective way for machining hard and fragile materials.

旋转超声加工是加工硬脆材料的一种较好方法。

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Rotary ultrasonic machining is an effective method for machining hard and fragile materials.

旋转超声加工是加工硬脆材料的一种较好方法。

youdao

A big bounce is unlikely: credit for mortgages is hard to get and consumer confidence fragile.

反弹好像并不大：抵押贷款很难得到，并且消费者信心仍很脆弱。

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In recent months, though, Georgia and Azerbaijan have faced another serious challenge: deepening chaos, and declining Russian authority, on the northern side of the Caucasus mountains, on a scale which could wreck their own fragile and hard-won stability.

ECONOMIST: The dark side of the Caucasus

They treat it as if it is a natural phenomenon that can be manipulated and exploited, rather than the fragile creation of several generations of hard work, risk-taking and inventiveness.

WSJ: Washington Is Killing Silicon Valley

Debt burdens remain huge, and fragile banking sectors are making it hard for businesses to get credit.

ECONOMIST: Better news in East Asia