英语语法分析

Watermarks are stochastically permuted and coded by LDPC to improve the robustness against attacks.

水印嵌入之前进行随机置换与LDPC编码增强了水印抗攻击能力。

Methods:The blood pressure of 89 clinic patients with essential hypertension was measured stochastically.

方法：对门诊就诊的89例原发性高血压患者随测血压。

First new and old blood stochastically divide into 6 groups voluntarily, each group of 5 people , managed by Schoolmate Wang Yaping .

首先新老成员随机自愿分成了6组，每组5人，由王雅萍同学主持，向每组分发了一张画全家福的画纸。