space orientation短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 空间定向 It is shown by the comprehensive analysis that the casting market of China will have great development based on the proper developed space orientation and the high- class casting production. 综合分析表明，中国的铸件市场在找准发展空间、提高铸件质量的基础上，是大有发展前途的。 cnki