It has been proved in practice that this machine can significantly reduce raising cost and yield better economical results by comparison with conventional raising and cageraising methods.
实践表明，用该机掘进天井与普通掘进法和吊罐法相比，可大大减少成井费用，经济效益较好。
2
In terms of farming, the "Standardization" gives exact regulations on the raising condition, cage sizes, food's nutrition, and disease prevention.