这是因为，按照线性拟合外推的结果仅仅适用于线型构型（均为反式）的碳链。
This is because the linear extrapolation only holds for a chain that adopts a linear (all-trans) configuration.
然后以此空间构型为基础，用“团簇埋入自洽计算法”计算氨基酸在以水分子为外势条件下的电子结构。
Then, based on the structure, the electronic structure of amino acid with the potential of water molecules is calculated using the self-consistent cluster-embedding (SCCE) method.
在传统的20种天然氨基酸中，除没有手性中心的甘氨酸外，其他19种氨基酸均为L构型。
Among 20 basic amino acids, glycine is the only one not exhibiting chirality, and other 19 are all L-amino.
本课题采用新材料、新工艺，使外固定器的构型、体积、重量、灵活性等性能符合临床需要。
New material and technology were used for development of the new type external fixator, so as the construction, volume, weight, nimbleness of the equipment can meet the clinical requirement.
介绍了推拉杆用外嵌骨架橡胶密封圈的配方、产品构型、模具设计、生产工艺及产品性能。
The formulation and mold design, product structure, process and product properties of the rubber seal ring with outer case for push-pull rod were introduced.
本发明的合成方法简便直接，从外消旋的螺环二酮出发得到螺环骨架具有不同绝对构型的光 学纯的手性配体。
The synthetic method is simple and convenient and direct; and the spiral ring skeleton obtained from spiro-diketone has optical pure chiral ligand with different absolute configurations.
本发明的合成方法简便直接，从外消旋的螺环二酮出发得到螺环骨架具有不同绝对构型的光 学纯的手性配体。
The synthetic method is simple and convenient and direct; and the spiral ring skeleton obtained from spiro-diketone has optical pure chiral ligand with different absolute configurations.
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