轮机英语教学课件(29) control systems 2

9. There should be two means of communication between the bridge and main control station in the machinery space, one to be independent of the main electrical power supply.
but bridge instrumentation is required to include r/min indicator, direction of rotation indicator and starting air pressure:但驾驶台 指示仪表必须含有转数指示器、转向指示器和起动 空气压力表。
guarding against excessive power demands ，propeller cavitation， critical speed slipping：避免功率超过额 定值，螺旋桨出现空泡现象超越临界转数。
7. Bridge instrumentation will vary according to the desires of the ship owner and manufacturer, but is required to include r/min indicator,direction of rotation indicator and starting air pressure, whilst for unattended machinery space vessels, an emergency stop control system independent of the bridge control system is required.
in a vertical slot:垂直方向的槽内。在本句 中作地点状语
in a horizontal slot:水平方向的槽内
本句是并列句，中间用and 连接。第一句为 The lever is then moved in a vertical slot, the initial movement actuating the starting sequence on air ，第二句 为when a pre-set r/min has been reached the air is tripped and fuel applied.
sensor, the difference between these two signals being the r/min deviation from the required.
r/min: revolution per minute每分钟转 数
desired value signals for engine r/min 作主语，柴油机每分钟转数
Lesson 29
I. Phrases:
1. three-term controller 2. a load limiting device 3. control position 4. sensor 5. error signal 6. adjust the fuel racks 7. a servo-mechanism
according to the desires of the ship owner and manufacturer:根据船舶主人 与制造商的要求，在本句中作状语。
The subject of the second sentence is also “bridge instrumentation”, so the full sentence is:
1. Desired value signals for engine r/min are transmitted from the bridge control position or engine room remote control position and compared with the measured value signal from a propeller shaft speed
these two signals refers to desired value signals and the measured value signal
the difference between these two signals being the r/min deviation from the required为独立主格结构。本短 语可译为两者间的差就是与给定值的转数差。
8. a check circuit 9. programmer 10. commensurate with… 11. delay 12. direction of rotation indicator 13. be / make aware of… 14. stuff
II. Analysis of long and difficult sentences:
独立于驾驶台控制系统的应急停车控制系统
8. Also the bridge watchkeeper must be made aware of any machinery fault, that the fault is being attended to and that it has been rectified.
the interlock, check circuits, a programmer三个并列，用and连接，作 by的宾语。
allows the maximum acceleration to commensurate with safe operational requirements of the engine: allow sb./sth.to do sth.
the initial movement actuating the starting sequence on air为独立主格结构， 译文为：其初始动作是按起动顺序进空气
when a pre-set r/min has been reached 为时间状语从句，译为当达到预定转数时。
4. Subsequent movement of the lever operates a servo-mechanism which adjusts the speed setting lever on the engine and which is in turn connected to the governor.
subsequent movement of the lever 操纵 杆的随后移动，在本句中作主语。
operate 操纵，在本句中作谓语。 a servo-mechanism 伺服机构，为宾语。
which adjusts the speed setting lever on the engine 定语修饰a servomechanism
3. The lever is then moved in a vertical slot, the initial movement
actuating the starting sequence on air and when a pre-set r/min has been reached the air is tripped and fuel applied.
“independent of the bridge control system” is an attributive which modifies “an emergency stop control system”. And the Chinese translation for this subject is :
Biblioteka Baidu
2. Electronic, electro-pneumatic, electro-hydraulic and pneumatic systems may be used for signal transmission and fuel rack operation.
信号的传送及油门的操纵可用电动系统、电 气系统、电液系统以及气动系统来实现。
prevent sb./ sth. (from) doing sth.:防止某人或 某物做某事
prevents engine overloading:防止柴油机超负荷。
6. It also programmes the increase in power when moving from Full Ahead to Full Away, guarding against excessive power demands and propeller cavitation and critical speed slipping.
are transmitted为被动语态，作谓语。
compared与transmitted并列。
from the bridge control position or engine room remote control position 介词短语作状语， 本短语译为驾驶台控制室或机舱集控室。
with the measured value signal from a propeller shaft speed sensor作状语，与螺旋 桨轴速度传感器测得的转速信号
programme: Vt.为…编制程序，使按程序工 作
programmes the increase in power :使 功率的增加按程序进行。
Full Ahead:全速前进 Full Away: 定速运行
excessive power demands ，propeller cavitation， critical speed slipping为三 个并列的成分，有and 连接。
Here “whilst” is a conjunction which connects the first two sentences with the last one.
“for unattended machinery space vessels” is an adverbial. In Chinese:至于无人机舱
使最大加速与 柴油机安全运转的要求相适应
whilst manoeuvring：while manoeuvring, 作时间状语，在操纵时。
prevents engine overloading与allows the maximum acceleration to commensurate with safe operational requirements of the engine whilst manoeuvring 并列，用了but连 接。
make sb.aware of / that:使某人意识到
of any machinery fault, that the fault is being attended to, that it has been rectified,这三个并列，用and连接。
attend to:照料，注意
全句译为：还必须使驾驶台值班人员意识到发 生的任何机械故障，包括正在检修的和已经 排除的故障。
伺服机构用于调节柴油机上的转速设定杆
which is in turn connected to the governor 作定语，修饰the speed setting lever,译文：
转速设定杆接下来又和调速器相连。
5. The starting sequence is monitored by the interlock and check circuits shown, and a programmer, this allows the maximum acceleration to commensurate with safe operational requirements of the engine whilst manoeuvring but prevents engine overloading.