This "phase contrast" signal gives much clearer and detailed results.

这种“相差”信号提供更为清晰和详细的结果。

Portal velocity and portal flow with phase contrast (PC) were measured.

相位对比法(PC)测门静脉血流速度、每分钟流量。

The resolution of Darkfield and Phase Contrast Microscopy is up to 10-500A.

暗视场及相衬显微术的分辨率可达10～500（?）

Observation: 1. Phase contrast microscopy 2. S-100 immunostain 3. Cell's account.

观察：(1)相差显微镜，(2)S - 100免疫细胞化学染色，(3)细胞计数。

The principle for neutron phase contrast and tomography is presented in this paper.

介绍了中子相衬和中子层析的工作原理，提出了中子相衬层析成像方法。