bellows造句
61. In order to supply the theoretical basis, the formulae for calculating the deformation, stresses and effective area of the conical welded bellows are derived.
62. An aneroid is a sealed bellows which is sensitive to changes in atmospheric pressure.
63. Hoses, air bags and bellows shall be dimensioned in order to withstand a bursting pressure equal to at least three times the maximum pressure permitted by the pressure relief valve.
64. In this type of breathing , employed by modern amphibians and air-breathing fish, the mouth cavity expands and contracts like bellows to gulp air and force it into the lungs.
65. Pilot operated valves shall be considered for back pressures greater than 40% of set pressure if more favourable de-rating factors result in a valve smaller than a bellows type.
66. Bellows globe valve and gate valve according to MSS - SP - 117 standard design and manufacture.
67. Under the pressure level has a certain universal bellows, has formed a series of products.
68. This paper introduces the feature of bellows heat exchanger and its application in nitrogenous fertilizer enterprises.
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