Precipitin tests
[医] 沉淀素试验, 血清试验(检血、肉、精液等,辨别动物的种属)
🧩 词语组成解析
n. 沉淀素\\n[化] 沉淀素
n. 测验（test的复数）
🗣️ 情景例句
If only Robbie and Alexandra were here.
要是Robbie和Alexandra在这儿多好。
How many of these are you going to lend her?
你要借多少给她？
Even more processes are never patented at all but kept as secret processes.
更多的工艺过程根本就不会取得专利权，而是作为秘方保存着。