Portal crane sub frame and four-link arm two types, from the crane hoisting, luffing, slewing and walking four agencies ac frequency control, the machine USES PLC control, superior performance.

门座式起重机分单臂架和四连杆两种类型，起重机的起升、变幅、回转和行走四大机构均采用交流变频调速，整机采用PLC控制，使用性能优越。

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They may even use harmless bacteria as a transport link to arm other harmful bugs that pass by.

FORBES: Germ Warfare

But he only offers vague assurances of "pull-through, " as the customers who load up on Compaq's industry-standard Web-servers and related equipment also turn to Compaq's services arm to link it all together.

FORBES: Desktop battle plan

Check a video of the arm in action at the read link -- it's even niftier than it sounds.

ENGADGET: Rocket-powered mechanical arm might boost prosthetic tech