valve-seat jacket

The supplier is required to submit bill of the practical application of jacket ball valve and with major parameters indicated in international unit.

供货商需递交夹套球阀（jacketballvalve）的实际应用清单，同时用国际单位制标出主要参数。

Directly coupled fluid-heat simulation is employed in this paper to investigate the temperature field of cylinder head in a 4-valve gasoline engine by using of CFD software. Computational model includes cylinder head, cylinder block and water jacket.

使用CFD软件通过建立的气缸盖、机体和冷却水套组成的耦合模型，采用直接流热耦合方法计算了某四气门汽油机气缸盖温度场。

The supplier shall provide adequate on-site service and after-sale support and assign qualified representatives for assisting the installation, commissioning, starting and on-site training of the jacket ball valve.

供货商应提供强有力的现场服务与售后支持，并配备有资格的现场代表配合夹套球阀（jacketballvalve）的安装、试运行、启动、和现场培训。

Three-way regulating valve is currently used to control the temperature of cooling water in jacket cooling water system of main marine diesel engine.

为了实现船舶主柴油机的变流量冷却，需要对主机缸套冷却水系统进行水力计算。