Abstract: An apparatus used for wave soldering including a nozzle device configured to discharge molten solder to a circuit board near a solder tank, wherein, the nozzle device includes at least one pair of adjacent nozzle openings configured to discharge the molten solder towards the middle between the pair of nozzle openings.

Abstract: An apparatus used for wave soldering including a nozzle device configured to discharge molten solder to a circuit board near a solder tank, wherein, the nozzle device includes at least one pair of adjacent nozzle openings configured to discharge the molten solder towards the middle between the pair of nozzle openings.

Abstract: The present invention discloses a method of message transmission performed in a server; a method of message transmission performed in a client; a symbol-based method for transmitting a message between a server and at least one client as well as a server; a client and a symbol-based message transmission system, wherein the symbol-based method of message transmission has: at least one client requesting the server to perform message transmission; the server transmitting symbols of the client's message to the client; and presenting the received message symbols on the client. The symbol-based method of message transmission saves a great deal of bandwidth of the communication channel by having the server only transmit symbols that represent the message after receiving a message transmission request from the client. This is done in order to efficiently transmit a message with a large body and/or attachment(s), thereby avoiding the risk of blocking the communication channel.

Abstract: The present invention discloses a method of message transmission performed in a server; a method of message transmission performed in a client; a symbol-based method for transmitting a message between a server and at least one client as well as a server; a client and a symbol-based message transmission system, wherein the symbol-based method of message transmission has: at least one client requesting the server to perform message transmission; the server transmitting symbols of the client's message to the client; and presenting the received message symbols on the client. The symbol-based method of message transmission saves a great deal of bandwidth of the communication channel by having the server only transmit symbols that represent the message after receiving a message transmission request from the client. This is done in order to efficiently transmit a message with a large body and/or attachment(s), thereby avoiding the risk of blocking the communication channel.