NIBCO swing check valves are available with an outside lever and weight. The lever and weight arrangement is used to maintain exterior control over disc movement.

尼伯科旋启式止回阀可配置外部操纵杆和压铁。操纵杆和压铁用于对阀瓣进行外部控制。

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The goal of ship optimization design is to obtain the lightest hull weight and the largest cabin capacity, while on the condition that satisfies the requests of strength and general arrangement.

船舶优化设计的目的是在满足强度要求和总布置要求的前提下，使船体重量最轻，舱容最大。

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Dispensing with the usual throttle arrangement in this way saves weight and complexity.

以这种方式调整风扇的通常布置减少了重量和复杂性。

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