A fuel injector having a housing including an inlet, an outlet, and a passageway for fuel flow from the inlet to the outlet. The lock detector includes first and second beat generators configured to generate corresponding beat signals based on the first and second input signals. During embroidering, a periphery of the embroidering portion being perforated by the needles of the embroidering machine and a plurality of sewing threads. A heat-dissipation member composed of aluminum can be attached to the lower substrate so as to increase the temperature difference. And, the fluid control line couples the valve controller to the control valve. The methods and compositions of the invention are especially suitable for oral administration and are useful for alleviating the symptoms of pain, fatigue, and irritable bowel syndrome in fibromyalgia syndrome.