under: 短语和例子under the law 根据法律。 under age 未成年。 under sb.'s hand and seal 经某人签名盖章。 under arms 武装着,手执武器。 under avow 发过誓,在誓言下。 under favour 如果允许(这样说)的话〔多作插入句〕。 under fire 在弹雨下,冒着炮火 (land under fire
3 years of sales or design experience for construction related products or system . professional experience on piping system ( especially on under floor heating system ) is preferred 2到3年建筑相关产品或系统的销售或设计经验。有管路系统产品(特别是地板采暖)工作经验者优先。