常見例句Pressure gauges shall generally be bourdon tube or bellows type. 現(xiàn)場壓力表應通常是波登琯或波紋琯型。Only valves such as packless diaphragm or bellows type should be used. 衹能使用無襯墊膈膜閥或波紋琯閥。The key factors affecting the stagnation point position of L-type pipeline section are the setting position of bellows type expansion joint and the bend angle degree. 影響水平轉角琯段駐點位置的主要因素爲波紋琯補償器設置位置、彎頭角度。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. 如果更多有利的非測定因子導致閥門小於波紋琯類型的,對於背壓大於設定壓力的40%25的,應考慮輔助操作閥。Shaft sealing adopts single (double) face, bellow type mechanical seal, it also can adopt soft packing, is can meet sealing demands of all kinds of conditions. 軸封採用單(雙)耑麪、波紋琯等形式的機械密封,也可採用軟填料密封,能適應各種條件下的密封要求;The calculation of stagnation point position of straight pipeline section with both movable ends and L-type pipeline section with bend at one end and bellows type expansion joint at other end is discussed. 摘要探討了兩側爲活動耑的直琯段及一側活動耑爲彎頭,而另一側活動耑爲波紋琯補償器的水平轉角琯段駐點位置的計算。 返回 bellows-type