Bancor准备储备金

1.EtherToken
deposit:存入ETH，得到EtherToken

deposit

withdrawTo：减少msg.sender账户的EtherToken,　转换成ETH给_to

withdrawTo

2.BNT项目的储备金
EtherToken: https://etherscan.io/address/0xd76b5c2a23ef78368d8e34288b5b65d616b746ae (BancorEtherToken_1)

一笔储备金转入

EtherToken: https://etherscan.io/address/0xc0829421c1d260bd3cb3e0f06cfe2d52db2ce315 (BancorEtherToken_2)

一笔储备金转入