Consider of water ecosystem protection and characteristics of ultrasonic technology, low frequency and low power ultrasonic especially suit to control algal growth in water body.

超声波的空化作用能够抑制藻类生长，从保护水体生态系统以及超声波技术本身的特点考虑，低频率、低功率的超声波更适合于水体抑藻应用。

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The developed water washing engineering vehicle, with converter as its power system, and with proven technology, features low cost, simple system and reliable protection.

开发的水冲洗工程车采用劈相机系统作动力系统，技术成熟，成本低廉，系统简单，保护可靠。

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The key of reservoir protection is the protection of the pore throats during water injection in low permeability oilfields.

低渗油田注水过程中储层保护的关键是保护孔喉。

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They are certified to MIL-STD 810G for extremes in temperature, vibration, shock and four-foot drops and have an IP65 rating for ingress protection, which means they are fully protected against dust and can withstand low pressure jets of water from all directions.

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