birth weight to placental weight ratio
Molecular Weight and Molecular Weight Distribution
相对分子质量及其分布
相对分子量及其分布
分子量与分子量分布
分子量及分子量分布
ratio of fresh weight to dry weight
subjective weight and objective weight
weight average molecular weight
4 link strain insulators
A chain is no stronger than its weakest link
a connecting link between the preceding and the following
A Wide Range of Communication Link
Acknowledge Link Number