Carry out regular visual checks of vehicles and test equipment 車輛進(jìn)行定期視力檢查和測試設(shè)備
Now landing gear fully extended , three greens on , over the field . please give me a visual check on the landing gear 現(xiàn)在起落架完全放下,三個(gè)綠燈亮,飛越機(jī)場。請(qǐng)給予我目視檢查起落架。
A visual check of air gaps is sufficient , but mechanical backflow preventers have to be tested with properly calibrated gauge equipment 盡管安裝氣隙足夠目視觀察,但是機(jī)械式防回流閥還是必須用適當(dāng)量程的儀表設(shè)備進(jìn)行檢測。
Users should have regular visual check on the condition of the regulator and delivery tubing to ensure no leakage or damage and free from dust or other contaminants 使用者應(yīng)定期檢視調(diào)節(jié)器及輸送喉的操作情況,確保沒有泄漏氣體,亦沒有塵?;蚱渌矬w污染。
They allow visual checking of chambers and flames . pyrex glass , protected with alloy mesh , provides large viewing area . cast iron frame and housing . automatic , spring loaded shutter 允許視覺檢查燃燒室和火焰。派熱克斯耐熱玻璃,合金網(wǎng)保護(hù),提供大視覺范圍。鑄鐵框架。自動(dòng)彈簧負(fù)載門。