In using reduction gears to obtain efficient propeller speeds, ().
The most inefficient method of voltage reduction from the stand point of power loss, is a/an ()
The sudden reduction of pressure occurring within the crankcase of a refrigeration compressor during starting causes the ().
消声sound attenuation;moise reduction sound deadening
Pitted reduction gear teeth having a deep blue color with evidence of overheating have been operated with ()
异化型硝酸还原(dissimilartive nitrate reduction)
“3R”指的是Reduction::“()”、Replacement:“()”、Refinementt:“优化”。
标准还原电位(E°ˊ)(standard reduction potential)
With() the engine need not to be aligned with reduction gears or propeller shaft.
Some medium and high-speed diesel engines require reduction gear units to provide a useful propeller speedIn most reduction gears, the bull gear()
In the cargo winch, spur reduction gearing transfers the motor drive to ().
罗伯特・希斯提出的危机管理5R模式中的“reduction减缓”指的是()
Proper operation of the main engine reduction gear set requires the operation to monitor ()
The total berth time for a vessel can be reduced through a reduction().
Wear occurring at the tips of the reduction gear teeth is usually the result of ().
Diesel engine mufflers accomplish noise reduction by ()
同化型硝酸还原(assimilative nitrate reduction)
隔声量sound reduction index
撞击声压级改善量reduction of impact sound pressure level
十倍减少时间(decimal reduction time,D)
国外许多国家都立法对实验动物使用伦理方面的问题进行了规定,这些法律法规的主要依据来自于3R原则。3R是指下列哪些?A.替代(Replacement);B.减少(Reduction);C.重复(repetition);D.优化(Refinement)。
You may face a reduction or ________ of benefits.
What is the main reason of the reduction of the grizzly bears' number?
Male liposuction is more popular than male breast-reduction.