压比的英文：
pressure ratio

参考例句：

lock block
压块

Line drop8 compensator.
线路压降补偿器。

COMPRESSION-TYPE(COMP.)
压环式

Seal Tape
热封/压胶

pulse voltage multiplier
脉冲倍压发生器

No-voltage release
无压释放器

Dung cake
压实的牛粪肥

squelch sb.with biting sarcasm
用尖刻的挖苦话压服人

Gamblers laying their stakes in roulette
在轮盘赌上压赌注的赌徒

Tire Pressure Monitor System (TPMS)
胎压监视安全系统

pressure是什么意思：
n. 压力；压迫；压强；气压
v. 施加压力；迫使

The pressure for disclosure will build.
要求公布真相的压力将会与日俱增。

region of high barometric pressure
高气压区

darcy impact pressure tube
达喂力管

He surrendered to political pressure.
他屈服于政治压力。

The velocities are independent of hydrostatic pressures
速度与流体静压力无关。

ratio是什么意思：
n. 比率；比例

neutralization ratio
中和比率|中和比例

This is the prime ratio of the nascent increments
这是最初增量的最初比。

Asset quality ratios: Ratios that measure the quality of assets of a lending institution.
资产质量比率:衡量贷款机构资产质量的各种比率。

Gearing ratio [IFC]: Ratio of outstanding investments and guarantees to the capital base.
资本搭配比率[国际金融公司]:指投资和担保余额与基础资本之间的比率。

This value has been called the canonical ratio.
这个数值称为“正则比值”。