An electrical connector comprises an insulative housing, a plurality of conductive terminals secured in the insulative housing, a metal shell shielding around the insulative housing and a magnetic element retained in the metal shell. The method generally comprises, introducing one or more contrast agents into the body, power-modulating transmit pulses into the body, receiving echoes from the body, processing the received echoes to reduce tissue-generated echoes and echoes from stationary contrast agent, using a color-flow processor to generate a color-encoded display responsive to contrast-agent motion. The delivery control terminal device of each car is sequentially connected to the delivery control terminal device of an adjacent car, sequentially delivers the delivered video information to the adjacent car, and delivers the delivered video information to a video output device via an in-car transmission path inside its own car. Some independent claims relate to methods for making chewing gums comprising among others the step of feeding an elastomer into a planetary roller extruder. The method includes forming a first electrode selected from a group consisting of transition metals, conductive metal-oxides, and alloys thereof.