Abstract: A speech converter for inter-translation between Chinese and the official language of the other party includes a matching card for forming unidirectional matches of a word, a phrase a word group, a short sentence, a common expression and, a sentence expressing the same meaning. The matching cards include a word matching card, a phrase matching card, a word group matching card, a short sentence matching card, a common expression matching card and a sentence matching card. The present invention enables a user to translate what he/she wants to say into a language that a listener can understand immediately, so that the listener can hear and understand these words and answer immediately, and the answer is sent back in mandarin.

Abstract: A waterproofing device for underwater wire connection comprises: a base, a clamping portion a tank port, a tank neck groove, an inverted tank, a connecting portion for two wires in inverted tank and close to the top of the tank. The two wires are in the inverted tank and close to the top of the tank, and are two wires connected well. The base is fixed on the ground and is configured to fix wires and the inverted tank. A bottom of the clamping portion is fixed on the base, and the clamping portion is configured to clamp the groove; the exposed part of the wire in the tank does not contact with water when the water overflows the tank with the mouth facing down, and the two connected wires can conduct electricity normally; the waterproofing can also be monitored and added into the tank.

Abstract: An industrial powder making device having spiked hammer and blade arms. The device includes a powder making cylinder body, spiked hammer arms, a front oblique hammer, vertical hammers, a hammer arm, a detachable rack, a detachable rack inner bulge, spiked blade arms, a front oblique blade, high-hardness wear-resistant alloy sheets, a blade arm, a rotating shaft, a rotating shaft groove, a clamping piece, a feeding port, a discharging port, bearings, a rotating power module, a liquid nitrogen storage tank, a pipeline, a valve, nitrogen input holes, a nitrogen output hole, a fine particle collection device and a disc bevel discharging control device. An operating method is: crushing the ore by the spiked hammer arms, grinding the ore by the spiked blade arms, cooling with nitrogen, controlling equivalent input and output of the ore, and crushing and grinding the ore according to an established route, thereby realizing rapid powder making.