ph indicator phph值: price; value指示剂: indicator; tracer agentph值指示剂: ph indicator; phiph值指示剂,氢离子(浓度的)负指数指示剂: ph indicator值指示剂,氢离子浓度的负指数指示剂: phindicatorph下载手机词典可随时随地查词查翻译