PLC is the critical part to enable all parts of CNC work effective and reliable, so PLC programming tool is an essential part of CNC.

PLC程序是使数控机床的各部件有效可靠工作的关键部分，因此PLC编程工具是数控系统中必不可少的部分。

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And again, Americans all around the country took note of this quiet,serious man who did such effective work in so many different kinds of situations.

VOA: special.2011.02.10

"They can work, they can be effective. They need to be adequately resourced.

VOA: standard.2009.11.17

"We know this is a shared responsibility and in the days ahead we will work with the international community and our Chinese colleagues to fashion an effective and appropriate response."

VOA: standard.2010.05.25

Much of my work involves helping people become more effective at work, and if they are not working, more productive in their job searches.

FORBES: Does Your Walk Match Your Talk?

"We've made great progress toward a deal which will work and be effective in the marketplace, " said Treasury Secretary Henry Paulson, flanked by leading members of Congress, in a surreal 12:30 a.m. press conference Sunday that followed nine hours of intense negotiations.

FORBES: A Deal On The Bailout

More than a decade of research shows that when people experience a fit between their own motivation and the way they work, they are not only more effective, but they also find their work more interesting and engaging, and value it more.

FORBES: The Surprising Key to Finding The Right Job For You