The apparatus consists of a bulb of known volume and valve block or manifold.
仪器由一个已知体积的球管和一个阀组或管网所组成。
Most are run not by paddles on a hydraulic valve block, but by a computer system.
大多数并不是由液压阀块的活塞操纵,而是由计算机系统控制。
The analysis result indicates that the valve block satisfies the actual operation requirements.
分析结果表明该阀块满足实际使用要求。
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