Chitosan is compatibility from the natural N-deacetylated derivative of chitin, and has perfect biocompatibility and antibacterial function with broad-spectrum.
壳聚糖是天然甲壳素经乙酰基反应后的可溶物，具有良好的生物相容性和防腐抑菌性。
It initia1ly probes whether any natural number N can be used as a mumerical value of even order multiplier magic square to construct a multiplier magic square of non-geometric progression.
给出了单偶数阶和双偶数阶非等比数列乘幻方的构造方法，把乘幻方的研究从等比数列推广到了非等比数列；探讨了以任给自然数N为偶阶乘幻方值构造非等比数列乘幻方。
But because any export of PAWS is illegal, the entire trade is banned, Yuri N. Privalov, the minister of natural resources for the Amur region, said in an interview.
但Amur地区的自然资源部长Yuri N . Privalov在一次访谈中说，由于任何形式的熊掌出口都是非法的，所以整个交易都是被禁止的。
Since rock is basically music for teenagers, rock 'n' rollers have seized on and exploited the natural rebelliousness of teens with much success.
摇滚大体来讲是一种给青少年的音乐。摇滚乐在抓住并且利用青少年叛逆的天性这一点上做的非常成功。
Two chiral P, N-ligands were synthesized in high yields from natural quinine and cinchonine under mild conditions.
以价廉的天然产物辛可宁和奎宁为原料，在温和的条件下方便地合成了两个手性膦氮配体。
Obvious changes of atomic natural charge happened to atoms C(1), H(11), O(28), O(29) and N(27). The bond lengths and bond angles related to these atoms were also varied greatly.
参与新键形成和旧键断裂原子C（1），H（11），O（28），O（29）和N（27）的原子自然电荷及与其相关的键长、键角有明显的变化。
The rabies virus glycoprotein (GP) can assume at least three different conformational states: the natural state (n), the activated (a) hydrophobic state and the fusion-inactive (I) state.
狂犬病病毒糖蛋白至少有三种不同构型：自然形式(N)、激活的水溶性状态(A)和融合灭活构型(I)。
Objective: To study the solvent systems suitable for N-tert-butoxycarbonylation of non-natural amino acids.
前言： 目的：探讨非天然氨基酸N-叔丁氧羰基化反应的适宜溶剂系统。
N - Agriculture, Natural Resources, Environment, and Extractive Industries.
农业，自然资源，环境，采掘业。
The fixation effect of total N in artificial vegetation was more obvious than that in natural vegetation, but it was converse on the fixation effect of total P.
人工植被相对于天然植被对总氮的固定作用更为明显，而对总磷的固定作用劣于天然植被。
The fixation effect of total N in artificial vegetation was more obvious than that in natural vegetation, but it was converse on the fixation effect of total P.
人工植被相对于天然植被对总氮的固定作用更为明显，而对总磷的固定作用劣于天然植被。
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