Many biologically important organic compounds ( sugars and amino acids ) possess at least one asymmetric carbon atom and therefore occur in two isomeric forms for the amino acid molecule. 许多对生物重要的有机化合物(糖和氨基酸)存在着至少一种非对称碳原子,并因此使这个氨基酸分子产生了两个同分异构体。
Structural unemployment theory indicates that at least one labour market has between supply and demand structural asymmetric only, and if workforce are unable to shift freely among different markets, the structural unemployment will be produced. 结构性失业理论表明只要至少一个劳动力市场存在供给与需求结构的不对称,并且劳动力无法在不同市场间自由转移的话,结构性失业就会产生。
When a symmetric key is created, the symmetric key must be encrypted by using at least one of the following : certificate, password, symmetric key, asymmetric key. 当创建对称密钥时,必须使用下列至少一项对其进行加密:证书、密码、对称密钥和非对称密钥。
Least square method is used to eliminate linearity errors of system as result of asymmetric illumination and fitting. 对由于光照不均以及安装等存在的系统线性误差,采用最小二乘法线性拟合加以消除;